{"id":249,"date":"2018-11-19T15:56:51","date_gmt":"2018-11-19T07:56:51","guid":{"rendered":"https:\/\/www.ccagml.com\/?p=249"},"modified":"2019-02-21T10:15:44","modified_gmt":"2019-02-21T02:15:44","slug":"redis%e5%9f%ba%e7%a1%80%e7%9f%a5%e8%af%86","status":"publish","type":"post","link":"https:\/\/www.ccagml.com\/?p=249","title":{"rendered":"Redis\u57fa\u7840\u77e5\u8bc6"},"content":{"rendered":"<ul>\n<li><a href=\"https:\/\/github.com\/CyC2018\/CS-Notes\" target=\"_blank\" rel=\"noopener\">\u53c2\u8003\u5730\u5740:https:\/\/github.com\/CyC2018\/CS-Notes <\/a><\/li>\n<\/ul>\n<h1>\u4e00\u3001\u6982\u8ff0<\/h1>\n<p>Redis \u662f\u901f\u5ea6\u975e\u5e38\u5feb\u7684\u975e\u5173\u7cfb\u578b\uff08NoSQL\uff09\u5185\u5b58\u952e\u503c\u6570\u636e\u5e93\uff0c\u53ef\u4ee5\u5b58\u50a8\u952e\u548c\u4e94\u79cd\u4e0d\u540c\u7c7b\u578b\u7684\u503c\u4e4b\u95f4\u7684\u6620\u5c04\u3002<\/p>\n<p>\u952e\u7684\u7c7b\u578b\u53ea\u80fd\u4e3a\u5b57\u7b26\u4e32\uff0c\u503c\u652f\u6301\u4e94\u79cd\u6570\u636e\u7c7b\u578b\uff1a\u5b57\u7b26\u4e32\u3001\u5217\u8868\u3001\u96c6\u5408\u3001\u6563\u5217\u8868\u3001\u6709\u5e8f\u96c6\u5408\u3002<\/p>\n<p>Redis \u652f\u6301\u5f88\u591a\u7279\u6027\uff0c\u4f8b\u5982\u5c06\u5185\u5b58\u4e2d\u7684\u6570\u636e\u6301\u4e45\u5316\u5230\u786c\u76d8\u4e2d\uff0c\u4f7f\u7528\u590d\u5236\u6765\u6269\u5c55\u8bfb\u6027\u80fd\uff0c\u4f7f\u7528\u5206\u7247\u6765\u6269\u5c55\u5199\u6027\u80fd\u3002<\/p>\n<h1>\u4e8c\u3001\u6570\u636e\u7c7b\u578b<\/h1>\n<table>\n<thead>\n<tr>\n<th align=\"center\">\u6570\u636e\u7c7b\u578b<\/th>\n<th align=\"center\">\u53ef\u4ee5\u5b58\u50a8\u7684\u503c<\/th>\n<th align=\"center\">\u64cd\u4f5c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"center\">STRING<\/td>\n<td align=\"center\">\u5b57\u7b26\u4e32\u3001\u6574\u6570\u6216\u8005\u6d6e\u70b9\u6570<\/td>\n<td align=\"center\">\u5bf9\u6574\u4e2a\u5b57\u7b26\u4e32\u6216\u8005\u5b57\u7b26\u4e32\u7684\u5176\u4e2d\u4e00\u90e8\u5206\u6267\u884c\u64cd\u4f5c<\/br> \u5bf9\u6574\u6570\u548c\u6d6e\u70b9\u6570\u6267\u884c\u81ea\u589e\u6216\u8005\u81ea\u51cf\u64cd\u4f5c<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">LIST<\/td>\n<td align=\"center\">\u5217\u8868<\/td>\n<td align=\"center\">\u4ece\u4e24\u7aef\u538b\u5165\u6216\u8005\u5f39\u51fa\u5143\u7d20 <\/br> \u5bf9\u5355\u4e2a\u6216\u8005\u591a\u4e2a\u5143\u7d20<\/br> \u8fdb\u884c\u4fee\u526a\uff0c\u53ea\u4fdd\u7559\u4e00\u4e2a\u8303\u56f4\u5185\u7684\u5143\u7d20<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">SET<\/td>\n<td align=\"center\">\u65e0\u5e8f\u96c6\u5408<\/td>\n<td align=\"center\">\u6dfb\u52a0\u3001\u83b7\u53d6\u3001\u79fb\u9664\u5355\u4e2a\u5143\u7d20<\/br> \u68c0\u67e5\u4e00\u4e2a\u5143\u7d20\u662f\u5426\u5b58\u5728\u4e8e\u96c6\u5408\u4e2d<\/br> \u8ba1\u7b97\u4ea4\u96c6\u3001\u5e76\u96c6\u3001\u5dee\u96c6<\/br> \u4ece\u96c6\u5408\u91cc\u9762\u968f\u673a\u83b7\u53d6\u5143\u7d20<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">HASH<\/td>\n<td align=\"center\">\u5305\u542b\u952e\u503c\u5bf9\u7684\u65e0\u5e8f\u6563\u5217\u8868<\/td>\n<td align=\"center\">\u6dfb\u52a0\u3001\u83b7\u53d6\u3001\u79fb\u9664\u5355\u4e2a\u952e\u503c\u5bf9<\/br> \u83b7\u53d6\u6240\u6709\u952e\u503c\u5bf9<\/br> \u68c0\u67e5\u67d0\u4e2a\u952e\u662f\u5426\u5b58\u5728<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">ZSET<\/td>\n<td align=\"center\">\u6709\u5e8f\u96c6\u5408<\/td>\n<td align=\"center\">\u6dfb\u52a0\u3001\u83b7\u53d6\u3001\u5220\u9664\u5143\u7d20<\/br> \u6839\u636e\u5206\u503c\u8303\u56f4\u6216\u8005\u6210\u5458\u6765\u83b7\u53d6\u5143\u7d20<\/br> \u8ba1\u7b97\u4e00\u4e2a\u952e\u7684\u6392\u540d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<blockquote><p>\n  <a href=\"https:\/\/redislabs.com\/ebook\/part-1-getting-started\/chapter-1-getting-to-know-redis\/1-2-what-redis-data-structures-look-like\/\" target=\"_blank\" rel=\"noopener\">What Redis data structures look like<\/a>\n<\/p><\/blockquote>\n<h2>STRING<\/h2>\n<div align=\"center\"> <img src=\"pics\/6019b2db-bc3e-4408-b6d8-96025f4481d6.png\" width=\"400\"\/> <\/div>\n<p><\/p>\n<pre class=\"brush: xml; title: ; notranslate\" title=\"\">\n&amp;gt; set hello world\nOK\n&amp;gt; get hello\n&amp;quot;world&amp;quot;\n&amp;gt; del hello\n(integer) 1\n&amp;gt; get hello\n(nil)\n<\/pre>\n<h2>LIST<\/h2>\n<div align=\"center\"> <img src=\"pics\/fb327611-7e2b-4f2f-9f5b-38592d408f07.png\" width=\"400\"\/> <\/div>\n<p><\/p>\n<pre class=\"brush: xml; title: ; notranslate\" title=\"\">\n&amp;gt; rpush list-key item\n(integer) 1\n&amp;gt; rpush list-key item2\n(integer) 2\n&amp;gt; rpush list-key item\n(integer) 3\n\n&amp;gt; lrange list-key 0 -1\n1) &amp;quot;item&amp;quot;\n2) &amp;quot;item2&amp;quot;\n3) &amp;quot;item&amp;quot;\n\n&amp;gt; lindex list-key 1\n&amp;quot;item2&amp;quot;\n\n&amp;gt; lpop list-key\n&amp;quot;item&amp;quot;\n\n&amp;gt; lrange list-key 0 -1\n1) &amp;quot;item2&amp;quot;\n2) &amp;quot;item&amp;quot;\n<\/pre>\n<h2>SET<\/h2>\n<div align=\"center\"> <img src=\"pics\/cd5fbcff-3f35-43a6-8ffa-082a93ce0f0e.png\" width=\"400\"\/> <\/div>\n<p><\/p>\n<pre class=\"brush: xml; title: ; notranslate\" title=\"\">\n&amp;gt; sadd set-key item\n(integer) 1\n&amp;gt; sadd set-key item2\n(integer) 1\n&amp;gt; sadd set-key item3\n(integer) 1\n&amp;gt; sadd set-key item\n(integer) 0\n\n&amp;gt; smembers set-key\n1) &amp;quot;item&amp;quot;\n2) &amp;quot;item2&amp;quot;\n3) &amp;quot;item3&amp;quot;\n\n&amp;gt; sismember set-key item4\n(integer) 0\n&amp;gt; sismember set-key item\n(integer) 1\n\n&amp;gt; srem set-key item2\n(integer) 1\n&amp;gt; srem set-key item2\n(integer) 0\n\n&amp;gt; smembers set-key\n1) &amp;quot;item&amp;quot;\n2) &amp;quot;item3&amp;quot;\n<\/pre>\n<h2>HASH<\/h2>\n<div align=\"center\"> <img src=\"pics\/7bd202a7-93d4-4f3a-a878-af68ae25539a.png\" width=\"400\"\/> <\/div>\n<p><\/p>\n<pre class=\"brush: xml; title: ; notranslate\" title=\"\">\n&amp;gt; hset hash-key sub-key1 value1\n(integer) 1\n&amp;gt; hset hash-key sub-key2 value2\n(integer) 1\n&amp;gt; hset hash-key sub-key1 value1\n(integer) 0\n\n&amp;gt; hgetall hash-key\n1) &amp;quot;sub-key1&amp;quot;\n2) &amp;quot;value1&amp;quot;\n3) &amp;quot;sub-key2&amp;quot;\n4) &amp;quot;value2&amp;quot;\n\n&amp;gt; hdel hash-key sub-key2\n(integer) 1\n&amp;gt; hdel hash-key sub-key2\n(integer) 0\n\n&amp;gt; hget hash-key sub-key1\n&amp;quot;value1&amp;quot;\n\n&amp;gt; hgetall hash-key\n1) &amp;quot;sub-key1&amp;quot;\n2) &amp;quot;value1&amp;quot;\n<\/pre>\n<h2>ZSET<\/h2>\n<div align=\"center\"> <img src=\"pics\/1202b2d6-9469-4251-bd47-ca6034fb6116.png\" width=\"400\"\/> <\/div>\n<p><\/p>\n<pre class=\"brush: xml; title: ; notranslate\" title=\"\">\n&amp;gt; zadd zset-key 728 member1\n(integer) 1\n&amp;gt; zadd zset-key 982 member0\n(integer) 1\n&amp;gt; zadd zset-key 982 member0\n(integer) 0\n\n&amp;gt; zrange zset-key 0 -1 withscores\n1) &amp;quot;member1&amp;quot;\n2) &amp;quot;728&amp;quot;\n3) &amp;quot;member0&amp;quot;\n4) &amp;quot;982&amp;quot;\n\n&amp;gt; zrangebyscore zset-key 0 800 withscores\n1) &amp;quot;member1&amp;quot;\n2) &amp;quot;728&amp;quot;\n\n&amp;gt; zrem zset-key member1\n(integer) 1\n&amp;gt; zrem zset-key member1\n(integer) 0\n\n&amp;gt; zrange zset-key 0 -1 withscores\n1) &amp;quot;member0&amp;quot;\n2) &amp;quot;982&amp;quot;\n<\/pre>\n<h1>\u4e09\u3001\u6570\u636e\u7ed3\u6784<\/h1>\n<h2>\u5b57\u5178<\/h2>\n<p>dictht \u662f\u4e00\u4e2a\u6563\u5217\u8868\u7ed3\u6784\uff0c\u4f7f\u7528\u62c9\u94fe\u6cd5\u4fdd\u5b58\u54c8\u5e0c\u51b2\u7a81\u3002<\/p>\n<pre class=\"brush: cpp; title: ; notranslate\" title=\"\">\n\/* This is our hash table structure. Every dictionary has two of this as we\n * implement incremental rehashing, for the old to the new table. *\/\ntypedef struct dictht {\n    dictEntry **table;\n    unsigned long size;\n    unsigned long sizemask;\n    unsigned long used;\n} dictht;\n<\/pre>\n<pre class=\"brush: cpp; title: ; notranslate\" title=\"\">\ntypedef struct dictEntry {\n    void *key;\n    union {\n        void *val;\n        uint64_t u64;\n        int64_t s64;\n        double d;\n    } v;\n    struct dictEntry *next;\n} dictEntry;\n<\/pre>\n<p>Redis \u7684\u5b57\u5178 dict \u4e2d\u5305\u542b\u4e24\u4e2a\u54c8\u5e0c\u8868 dictht\uff0c\u8fd9\u662f\u4e3a\u4e86\u65b9\u4fbf\u8fdb\u884c rehash \u64cd\u4f5c\u3002\u5728\u6269\u5bb9\u65f6\uff0c\u5c06\u5176\u4e2d\u4e00\u4e2a dictht \u4e0a\u7684\u952e\u503c\u5bf9 rehash \u5230\u53e6\u4e00\u4e2a dictht \u4e0a\u9762\uff0c\u5b8c\u6210\u4e4b\u540e\u91ca\u653e\u7a7a\u95f4\u5e76\u4ea4\u6362\u4e24\u4e2a dictht \u7684\u89d2\u8272\u3002<\/p>\n<pre class=\"brush: cpp; title: ; notranslate\" title=\"\">\ntypedef struct dict {\n    dictType *type;\n    void *privdata;\n    dictht ht[2];\n    long rehashidx; \/* rehashing not in progress if rehashidx == -1 *\/\n    unsigned long iterators; \/* number of iterators currently running *\/\n} dict;\n<\/pre>\n<p>rehash \u64cd\u4f5c\u4e0d\u662f\u4e00\u6b21\u6027\u5b8c\u6210\uff0c\u800c\u662f\u91c7\u7528\u6e10\u8fdb\u65b9\u5f0f\uff0c\u8fd9\u662f\u4e3a\u4e86\u907f\u514d\u4e00\u6b21\u6027\u6267\u884c\u8fc7\u591a\u7684 rehash \u64cd\u4f5c\u7ed9\u670d\u52a1\u5668\u5e26\u6765\u8fc7\u5927\u7684\u8d1f\u62c5\u3002<\/p>\n<p>\u6e10\u8fdb\u5f0f rehash \u901a\u8fc7\u8bb0\u5f55 dict \u7684 rehashidx \u5b8c\u6210\uff0c\u5b83\u4ece 0 \u5f00\u59cb\uff0c\u7136\u540e\u6bcf\u6267\u884c\u4e00\u6b21 rehash \u90fd\u4f1a\u9012\u589e\u3002\u4f8b\u5982\u5728\u4e00\u6b21 rehash \u4e2d\uff0c\u8981\u628a dict[0] rehash \u5230 dict[1]\uff0c\u8fd9\u4e00\u6b21\u4f1a\u628a dict[0] \u4e0a table[rehashidx] \u7684\u952e\u503c\u5bf9 rehash \u5230 dict[1] \u4e0a\uff0cdict[0] \u7684 table[rehashidx] \u6307\u5411 null\uff0c\u5e76\u4ee4 rehashidx++\u3002<\/p>\n<p>\u5728 rehash \u671f\u95f4\uff0c\u6bcf\u6b21\u5bf9\u5b57\u5178\u6267\u884c\u6dfb\u52a0\u3001\u5220\u9664\u3001\u67e5\u627e\u6216\u8005\u66f4\u65b0\u64cd\u4f5c\u65f6\uff0c\u90fd\u4f1a\u6267\u884c\u4e00\u6b21\u6e10\u8fdb\u5f0f rehash\u3002<\/p>\n<p>\u91c7\u7528\u6e10\u8fdb\u5f0f rehash \u4f1a\u5bfc\u81f4\u5b57\u5178\u4e2d\u7684\u6570\u636e\u5206\u6563\u5728\u4e24\u4e2a dictht \u4e0a\uff0c\u56e0\u6b64\u5bf9\u5b57\u5178\u7684\u67e5\u627e\u64cd\u4f5c\u4e5f\u9700\u8981\u5230\u5bf9\u5e94\u7684 dictht \u53bb\u6267\u884c\u3002<\/p>\n<pre class=\"brush: cpp; title: ; notranslate\" title=\"\">\n\/* Performs N steps of incremental rehashing. Returns 1 if there are still\n * keys to move from the old to the new hash table, otherwise 0 is returned.\n *\n * Note that a rehashing step consists in moving a bucket (that may have more\n * than one key as we use chaining) from the old to the new hash table, however\n * since part of the hash table may be composed of empty spaces, it is not\n * guaranteed that this function will rehash even a single bucket, since it\n * will visit at max N*10 empty buckets in total, otherwise the amount of\n * work it does would be unbound and the function may block for a long time. *\/\nint dictRehash(dict *d, int n) {\n    int empty_visits = n * 10; \/* Max number of empty buckets to visit. *\/\n    if (!dictIsRehashing(d)) return 0;\n\n    while (n-- &amp;amp;&amp;amp; d-&amp;gt;ht[0].used != 0) {\n        dictEntry *de, *nextde;\n\n        \/* Note that rehashidx can&amp;#039;t overflow as we are sure there are more\n         * elements because ht[0].used != 0 *\/\n        assert(d-&amp;gt;ht[0].size &amp;gt; (unsigned long) d-&amp;gt;rehashidx);\n        while (d-&amp;gt;ht[0].table[d-&amp;gt;rehashidx] == NULL) {\n            d-&amp;gt;rehashidx++;\n            if (--empty_visits == 0) return 1;\n        }\n        de = d-&amp;gt;ht[0].table[d-&amp;gt;rehashidx];\n        \/* Move all the keys in this bucket from the old to the new hash HT *\/\n        while (de) {\n            uint64_t h;\n\n            nextde = de-&amp;gt;next;\n            \/* Get the index in the new hash table *\/\n            h = dictHashKey(d, de-&amp;gt;key) &amp;amp; d-&amp;gt;ht[1].sizemask;\n            de-&amp;gt;next = d-&amp;gt;ht[1].table[h];\n            d-&amp;gt;ht[1].table[h] = de;\n            d-&amp;gt;ht[0].used--;\n            d-&amp;gt;ht[1].used++;\n            de = nextde;\n        }\n        d-&amp;gt;ht[0].table[d-&amp;gt;rehashidx] = NULL;\n        d-&amp;gt;rehashidx++;\n    }\n\n    \/* Check if we already rehashed the whole table... *\/\n    if (d-&amp;gt;ht[0].used == 0) {\n        zfree(d-&amp;gt;ht[0].table);\n        d-&amp;gt;ht[0] = d-&amp;gt;ht[1];\n        _dictReset(&amp;amp;d-&amp;gt;ht[1]);\n        d-&amp;gt;rehashidx = -1;\n        return 0;\n    }\n\n    \/* More to rehash... *\/\n    return 1;\n}\n<\/pre>\n<h2>\u8df3\u8dc3\u8868<\/h2>\n<p>\u662f\u6709\u5e8f\u96c6\u5408\u7684\u5e95\u5c42\u5b9e\u73b0\u4e4b\u4e00\u3002<\/p>\n<p>\u8df3\u8dc3\u8868\u662f\u57fa\u4e8e\u591a\u6307\u9488\u6709\u5e8f\u94fe\u8868\u5b9e\u73b0\u7684\uff0c\u53ef\u4ee5\u770b\u6210\u591a\u4e2a\u6709\u5e8f\u94fe\u8868\u3002<\/p>\n<div align=\"center\"> <img src=\"pics\/beba612e-dc5b-4fc2-869d-0b23408ac90a.png\" width=\"600px\"\/> <\/div>\n<p><\/p>\n<p>\u5728\u67e5\u627e\u65f6\uff0c\u4ece\u4e0a\u5c42\u6307\u9488\u5f00\u59cb\u67e5\u627e\uff0c\u627e\u5230\u5bf9\u5e94\u7684\u533a\u95f4\u4e4b\u540e\u518d\u5230\u4e0b\u4e00\u5c42\u53bb\u67e5\u627e\u3002\u4e0b\u56fe\u6f14\u793a\u4e86\u67e5\u627e 22 \u7684\u8fc7\u7a0b\u3002<\/p>\n<div align=\"center\"> <img src=\"pics\/0ea37ee2-c224-4c79-b895-e131c6805c40.png\" width=\"600px\"\/> <\/div>\n<p><\/p>\n<p>\u4e0e\u7ea2\u9ed1\u6811\u7b49\u5e73\u8861\u6811\u76f8\u6bd4\uff0c\u8df3\u8dc3\u8868\u5177\u6709\u4ee5\u4e0b\u4f18\u70b9\uff1a<\/p>\n<ul>\n<li>\u63d2\u5165\u901f\u5ea6\u975e\u5e38\u5feb\u901f\uff0c\u56e0\u4e3a\u4e0d\u9700\u8981\u8fdb\u884c\u65cb\u8f6c\u7b49\u64cd\u4f5c\u6765\u7ef4\u62a4\u5e73\u8861\u6027\uff1b<\/li>\n<li>\u66f4\u5bb9\u6613\u5b9e\u73b0\uff1b<\/li>\n<li>\u652f\u6301\u65e0\u9501\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h1>\u56db\u3001\u4f7f\u7528\u573a\u666f<\/h1>\n<h2>\u8ba1\u6570\u5668<\/h2>\n<p>\u53ef\u4ee5\u5bf9 String \u8fdb\u884c\u81ea\u589e\u81ea\u51cf\u8fd0\u7b97\uff0c\u4ece\u800c\u5b9e\u73b0\u8ba1\u6570\u5668\u529f\u80fd\u3002<\/p>\n<p>Redis \u8fd9\u79cd\u5185\u5b58\u578b\u6570\u636e\u5e93\u7684\u8bfb\u5199\u6027\u80fd\u975e\u5e38\u9ad8\uff0c\u5f88\u9002\u5408\u5b58\u50a8\u9891\u7e41\u8bfb\u5199\u7684\u8ba1\u6570\u91cf\u3002<\/p>\n<h2>\u7f13\u5b58<\/h2>\n<p>\u5c06\u70ed\u70b9\u6570\u636e\u653e\u5230\u5185\u5b58\u4e2d\uff0c\u8bbe\u7f6e\u5185\u5b58\u7684\u6700\u5927\u4f7f\u7528\u91cf\u4ee5\u53ca\u6dd8\u6c70\u7b56\u7565\u6765\u4fdd\u8bc1\u7f13\u5b58\u7684\u547d\u4e2d\u7387\u3002<\/p>\n<h2>\u67e5\u627e\u8868<\/h2>\n<p>\u4f8b\u5982 DNS \u8bb0\u5f55\u5c31\u5f88\u9002\u5408\u4f7f\u7528 Redis \u8fdb\u884c\u5b58\u50a8\u3002<\/p>\n<p>\u67e5\u627e\u8868\u548c\u7f13\u5b58\u7c7b\u4f3c\uff0c\u4e5f\u662f\u5229\u7528\u4e86 Redis \u5feb\u901f\u7684\u67e5\u627e\u7279\u6027\u3002\u4f46\u662f\u67e5\u627e\u8868\u7684\u5185\u5bb9\u4e0d\u80fd\u5931\u6548\uff0c\u800c\u7f13\u5b58\u7684\u5185\u5bb9\u53ef\u4ee5\u5931\u6548\uff0c\u56e0\u4e3a\u7f13\u5b58\u4e0d\u4f5c\u4e3a\u53ef\u9760\u7684\u6570\u636e\u6765\u6e90\u3002<\/p>\n<h2>\u6d88\u606f\u961f\u5217<\/h2>\n<p>List \u662f\u4e00\u4e2a\u53cc\u5411\u94fe\u8868\uff0c\u53ef\u4ee5\u901a\u8fc7 lpop \u548c lpush \u5199\u5165\u548c\u8bfb\u53d6\u6d88\u606f\u3002<\/p>\n<p>\u4e0d\u8fc7\u6700\u597d\u4f7f\u7528 Kafka\u3001RabbitMQ \u7b49\u6d88\u606f\u4e2d\u95f4\u4ef6\u3002<\/p>\n<h2>\u4f1a\u8bdd\u7f13\u5b58<\/h2>\n<p>\u53ef\u4ee5\u4f7f\u7528 Redis \u6765\u7edf\u4e00\u5b58\u50a8\u591a\u53f0\u5e94\u7528\u670d\u52a1\u5668\u7684\u4f1a\u8bdd\u4fe1\u606f\u3002<\/p>\n<p>\u5f53\u5e94\u7528\u670d\u52a1\u5668\u4e0d\u518d\u5b58\u50a8\u7528\u6237\u7684\u4f1a\u8bdd\u4fe1\u606f\uff0c\u4e5f\u5c31\u4e0d\u518d\u5177\u6709\u72b6\u6001\uff0c\u4e00\u4e2a\u7528\u6237\u53ef\u4ee5\u8bf7\u6c42\u4efb\u610f\u4e00\u4e2a\u5e94\u7528\u670d\u52a1\u5668\uff0c\u4ece\u800c\u66f4\u5bb9\u6613\u5b9e\u73b0\u9ad8\u53ef\u7528\u6027\u4ee5\u53ca\u53ef\u4f38\u7f29\u6027\u3002<\/p>\n<h2>\u5206\u5e03\u5f0f\u9501\u5b9e\u73b0<\/h2>\n<p>\u5728\u5206\u5e03\u5f0f\u573a\u666f\u4e0b\uff0c\u65e0\u6cd5\u4f7f\u7528\u5355\u673a\u73af\u5883\u4e0b\u7684\u9501\u6765\u5bf9\u591a\u4e2a\u8282\u70b9\u4e0a\u7684\u8fdb\u7a0b\u8fdb\u884c\u540c\u6b65\u3002<\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 Reids \u81ea\u5e26\u7684 SETNX \u547d\u4ee4\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\uff0c\u9664\u6b64\u4e4b\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u5b98\u65b9\u63d0\u4f9b\u7684 RedLock \u5206\u5e03\u5f0f\u9501\u5b9e\u73b0\u3002<\/p>\n<h2>\u5176\u5b83<\/h2>\n<p>Set \u53ef\u4ee5\u5b9e\u73b0\u4ea4\u96c6\u3001\u5e76\u96c6\u7b49\u64cd\u4f5c\uff0c\u4ece\u800c\u5b9e\u73b0\u5171\u540c\u597d\u53cb\u7b49\u529f\u80fd\u3002<\/p>\n<p>ZSet \u53ef\u4ee5\u5b9e\u73b0\u6709\u5e8f\u6027\u64cd\u4f5c\uff0c\u4ece\u800c\u5b9e\u73b0\u6392\u884c\u699c\u7b49\u529f\u80fd\u3002<\/p>\n<h1>\u4e94\u3001Redis \u4e0e Memcached<\/h1>\n<p>\u4e24\u8005\u90fd\u662f\u975e\u5173\u7cfb\u578b\u5185\u5b58\u952e\u503c\u6570\u636e\u5e93\uff0c\u4e3b\u8981\u6709\u4ee5\u4e0b\u4e0d\u540c\uff1a<\/p>\n<h2>\u6570\u636e\u7c7b\u578b<\/h2>\n<p>Memcached \u4ec5\u652f\u6301\u5b57\u7b26\u4e32\u7c7b\u578b\uff0c\u800c Redis \u652f\u6301\u4e94\u79cd\u4e0d\u540c\u7684\u6570\u636e\u7c7b\u578b\uff0c\u53ef\u4ee5\u66f4\u7075\u6d3b\u5730\u89e3\u51b3\u95ee\u9898\u3002<\/p>\n<h2>\u6570\u636e\u6301\u4e45\u5316<\/h2>\n<p>Redis \u652f\u6301\u4e24\u79cd\u6301\u4e45\u5316\u7b56\u7565\uff1aRDB \u5feb\u7167\u548c AOF \u65e5\u5fd7\uff0c\u800c Memcached \u4e0d\u652f\u6301\u6301\u4e45\u5316\u3002<\/p>\n<h2>\u5206\u5e03\u5f0f<\/h2>\n<p>Memcached \u4e0d\u652f\u6301\u5206\u5e03\u5f0f\uff0c\u53ea\u80fd\u901a\u8fc7\u5728\u5ba2\u6237\u7aef\u4f7f\u7528\u4e00\u81f4\u6027\u54c8\u5e0c\u6765\u5b9e\u73b0\u5206\u5e03\u5f0f\u5b58\u50a8\uff0c\u8fd9\u79cd\u65b9\u5f0f\u5728\u5b58\u50a8\u548c\u67e5\u8be2\u65f6\u90fd\u9700\u8981\u5148\u5728\u5ba2\u6237\u7aef\u8ba1\u7b97\u4e00\u6b21\u6570\u636e\u6240\u5728\u7684\u8282\u70b9\u3002<\/p>\n<p>Redis Cluster \u5b9e\u73b0\u4e86\u5206\u5e03\u5f0f\u7684\u652f\u6301\u3002<\/p>\n<h2>\u5185\u5b58\u7ba1\u7406\u673a\u5236<\/h2>\n<ul>\n<li>\u5728 Redis \u4e2d\uff0c\u5e76\u4e0d\u662f\u6240\u6709\u6570\u636e\u90fd\u4e00\u76f4\u5b58\u50a8\u5728\u5185\u5b58\u4e2d\uff0c\u53ef\u4ee5\u5c06\u4e00\u4e9b\u5f88\u4e45\u6ca1\u7528\u7684 value \u4ea4\u6362\u5230\u78c1\u76d8\uff0c\u800c Memcached \u7684\u6570\u636e\u5219\u4f1a\u4e00\u76f4\u5728\u5185\u5b58\u4e2d\u3002<\/p>\n<\/li>\n<li>\n<p>Memcached \u5c06\u5185\u5b58\u5206\u5272\u6210\u7279\u5b9a\u957f\u5ea6\u7684\u5757\u6765\u5b58\u50a8\u6570\u636e\uff0c\u4ee5\u5b8c\u5168\u89e3\u51b3\u5185\u5b58\u788e\u7247\u7684\u95ee\u9898\u3002\u4f46\u662f\u8fd9\u79cd\u65b9\u5f0f\u4f1a\u4f7f\u5f97\u5185\u5b58\u7684\u5229\u7528\u7387\u4e0d\u9ad8\uff0c\u4f8b\u5982\u5757\u7684\u5927\u5c0f\u4e3a 128 bytes\uff0c\u53ea\u5b58\u50a8 100 bytes \u7684\u6570\u636e\uff0c\u90a3\u4e48\u5269\u4e0b\u7684 28 bytes \u5c31\u6d6a\u8d39\u6389\u4e86\u3002<\/p>\n<\/li>\n<\/ul>\n<h1>\u516d\u3001\u952e\u7684\u8fc7\u671f\u65f6\u95f4<\/h1>\n<p>Redis \u53ef\u4ee5\u4e3a\u6bcf\u4e2a\u952e\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u5f53\u952e\u8fc7\u671f\u65f6\uff0c\u4f1a\u81ea\u52a8\u5220\u9664\u8be5\u952e\u3002<\/p>\n<p>\u5bf9\u4e8e\u6563\u5217\u8868\u8fd9\u79cd\u5bb9\u5668\uff0c\u53ea\u80fd\u4e3a\u6574\u4e2a\u952e\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff08\u6574\u4e2a\u6563\u5217\u8868\uff09\uff0c\u800c\u4e0d\u80fd\u4e3a\u952e\u91cc\u9762\u7684\u5355\u4e2a\u5143\u7d20\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u3002<\/p>\n<h1>\u4e03\u3001\u6570\u636e\u6dd8\u6c70\u7b56\u7565<\/h1>\n<p>\u53ef\u4ee5\u8bbe\u7f6e\u5185\u5b58\u6700\u5927\u4f7f\u7528\u91cf\uff0c\u5f53\u5185\u5b58\u4f7f\u7528\u91cf\u8d85\u51fa\u65f6\uff0c\u4f1a\u65bd\u884c\u6570\u636e\u6dd8\u6c70\u7b56\u7565\u3002<\/p>\n<p>Reids \u5177\u4f53\u6709 6 \u79cd\u6dd8\u6c70\u7b56\u7565\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th align=\"center\">\u7b56\u7565<\/th>\n<th align=\"center\">\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"center\">volatile-lru<\/td>\n<td align=\"center\">\u4ece\u5df2\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u7684\u6570\u636e\u96c6\u4e2d\u6311\u9009\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684\u6570\u636e\u6dd8\u6c70<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">volatile-ttl<\/td>\n<td align=\"center\">\u4ece\u5df2\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u7684\u6570\u636e\u96c6\u4e2d\u6311\u9009\u5c06\u8981\u8fc7\u671f\u7684\u6570\u636e\u6dd8\u6c70<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">volatile-random<\/td>\n<td align=\"center\">\u4ece\u5df2\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u7684\u6570\u636e\u96c6\u4e2d\u4efb\u610f\u9009\u62e9\u6570\u636e\u6dd8\u6c70<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">allkeys-lru<\/td>\n<td align=\"center\">\u4ece\u6240\u6709\u6570\u636e\u96c6\u4e2d\u6311\u9009\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684\u6570\u636e\u6dd8\u6c70<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">allkeys-random<\/td>\n<td align=\"center\">\u4ece\u6240\u6709\u6570\u636e\u96c6\u4e2d\u4efb\u610f\u9009\u62e9\u6570\u636e\u8fdb\u884c\u6dd8\u6c70<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">noeviction<\/td>\n<td align=\"center\">\u7981\u6b62\u9a71\u9010\u6570\u636e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4f5c\u4e3a\u5185\u5b58\u6570\u636e\u5e93\uff0c\u51fa\u4e8e\u5bf9\u6027\u80fd\u548c\u5185\u5b58\u6d88\u8017\u7684\u8003\u8651\uff0cRedis \u7684\u6dd8\u6c70\u7b97\u6cd5\u5b9e\u9645\u5b9e\u73b0\u4e0a\u5e76\u975e\u9488\u5bf9\u6240\u6709 key\uff0c\u800c\u662f\u62bd\u6837\u4e00\u5c0f\u90e8\u5206\u5e76\u4e14\u4ece\u4e2d\u9009\u51fa\u88ab\u6dd8\u6c70\u7684 key\u3002<\/p>\n<p>\u4f7f\u7528 Redis \u7f13\u5b58\u6570\u636e\u65f6\uff0c\u4e3a\u4e86\u63d0\u9ad8\u7f13\u5b58\u547d\u4e2d\u7387\uff0c\u9700\u8981\u4fdd\u8bc1\u7f13\u5b58\u6570\u636e\u90fd\u662f\u70ed\u70b9\u6570\u636e\u3002\u53ef\u4ee5\u5c06\u5185\u5b58\u6700\u5927\u4f7f\u7528\u91cf\u8bbe\u7f6e\u4e3a\u70ed\u70b9\u6570\u636e\u5360\u7528\u7684\u5185\u5b58\u91cf\uff0c\u7136\u540e\u542f\u7528 allkeys-lru \u6dd8\u6c70\u7b56\u7565\uff0c\u5c06\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684\u6570\u636e\u6dd8\u6c70\u3002<\/p>\n<p>Redis 4.0 \u5f15\u5165\u4e86 volatile-lfu \u548c allkeys-lfu \u6dd8\u6c70\u7b56\u7565\uff0cLFU \u7b56\u7565\u901a\u8fc7\u7edf\u8ba1\u8bbf\u95ee\u9891\u7387\uff0c\u5c06\u8bbf\u95ee\u9891\u7387\u6700\u5c11\u7684\u952e\u503c\u5bf9\u6dd8\u6c70\u3002<\/p>\n<h1>\u516b\u3001\u6301\u4e45\u5316<\/h1>\n<p>Redis \u662f\u5185\u5b58\u578b\u6570\u636e\u5e93\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u6570\u636e\u5728\u65ad\u7535\u540e\u4e0d\u4f1a\u4e22\u5931\uff0c\u9700\u8981\u5c06\u5185\u5b58\u4e2d\u7684\u6570\u636e\u6301\u4e45\u5316\u5230\u786c\u76d8\u4e0a\u3002<\/p>\n<h2>RDB \u6301\u4e45\u5316<\/h2>\n<p>\u5c06\u67d0\u4e2a\u65f6\u95f4\u70b9\u7684\u6240\u6709\u6570\u636e\u90fd\u5b58\u653e\u5230\u786c\u76d8\u4e0a\u3002<\/p>\n<p>\u53ef\u4ee5\u5c06\u5feb\u7167\u590d\u5236\u5230\u5176\u5b83\u670d\u52a1\u5668\u4ece\u800c\u521b\u5efa\u5177\u6709\u76f8\u540c\u6570\u636e\u7684\u670d\u52a1\u5668\u526f\u672c\u3002<\/p>\n<p>\u5982\u679c\u7cfb\u7edf\u53d1\u751f\u6545\u969c\uff0c\u5c06\u4f1a\u4e22\u5931\u6700\u540e\u4e00\u6b21\u521b\u5efa\u5feb\u7167\u4e4b\u540e\u7684\u6570\u636e\u3002<\/p>\n<p>\u5982\u679c\u6570\u636e\u91cf\u5f88\u5927\uff0c\u4fdd\u5b58\u5feb\u7167\u7684\u65f6\u95f4\u4f1a\u5f88\u957f\u3002<\/p>\n<h2>AOF \u6301\u4e45\u5316<\/h2>\n<p>\u5c06\u5199\u547d\u4ee4\u6dfb\u52a0\u5230 AOF \u6587\u4ef6\uff08Append Only File\uff09\u7684\u672b\u5c3e\u3002<\/p>\n<p>\u4f7f\u7528 AOF \u6301\u4e45\u5316\u9700\u8981\u8bbe\u7f6e\u540c\u6b65\u9009\u9879\uff0c\u4ece\u800c\u786e\u4fdd\u5199\u547d\u4ee4\u4ec0\u4e48\u65f6\u5019\u4f1a\u540c\u6b65\u5230\u78c1\u76d8\u6587\u4ef6\u4e0a\u3002\u8fd9\u662f\u56e0\u4e3a\u5bf9\u6587\u4ef6\u8fdb\u884c\u5199\u5165\u5e76\u4e0d\u4f1a\u9a6c\u4e0a\u5c06\u5185\u5bb9\u540c\u6b65\u5230\u78c1\u76d8\u4e0a\uff0c\u800c\u662f\u5148\u5b58\u50a8\u5230\u7f13\u51b2\u533a\uff0c\u7136\u540e\u7531\u64cd\u4f5c\u7cfb\u7edf\u51b3\u5b9a\u4ec0\u4e48\u65f6\u5019\u540c\u6b65\u5230\u78c1\u76d8\u3002\u6709\u4ee5\u4e0b\u540c\u6b65\u9009\u9879\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th align=\"center\">\u9009\u9879<\/th>\n<th align=\"center\">\u540c\u6b65\u9891\u7387<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"center\">always<\/td>\n<td align=\"center\">\u6bcf\u4e2a\u5199\u547d\u4ee4\u90fd\u540c\u6b65<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">everysec<\/td>\n<td align=\"center\">\u6bcf\u79d2\u540c\u6b65\u4e00\u6b21<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">no<\/td>\n<td align=\"center\">\u8ba9\u64cd\u4f5c\u7cfb\u7edf\u6765\u51b3\u5b9a\u4f55\u65f6\u540c\u6b65<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li>always \u9009\u9879\u4f1a\u4e25\u91cd\u51cf\u4f4e\u670d\u52a1\u5668\u7684\u6027\u80fd\uff1b<\/li>\n<li>everysec \u9009\u9879\u6bd4\u8f83\u5408\u9002\uff0c\u53ef\u4ee5\u4fdd\u8bc1\u7cfb\u7edf\u5d29\u6e83\u65f6\u53ea\u4f1a\u4e22\u5931\u4e00\u79d2\u5de6\u53f3\u7684\u6570\u636e\uff0c\u5e76\u4e14 Redis \u6bcf\u79d2\u6267\u884c\u4e00\u6b21\u540c\u6b65\u5bf9\u670d\u52a1\u5668\u6027\u80fd\u51e0\u4e4e\u6ca1\u6709\u4efb\u4f55\u5f71\u54cd\uff1b<\/li>\n<li>no \u9009\u9879\u5e76\u4e0d\u80fd\u7ed9\u670d\u52a1\u5668\u6027\u80fd\u5e26\u6765\u591a\u5927\u7684\u63d0\u5347\uff0c\u800c\u4e14\u4e5f\u4f1a\u589e\u52a0\u7cfb\u7edf\u5d29\u6e83\u65f6\u6570\u636e\u4e22\u5931\u7684\u6570\u91cf\u3002<\/li>\n<\/ul>\n<p>\u968f\u7740\u670d\u52a1\u5668\u5199\u8bf7\u6c42\u7684\u589e\u591a\uff0cAOF \u6587\u4ef6\u4f1a\u8d8a\u6765\u8d8a\u5927\u3002Redis \u63d0\u4f9b\u4e86\u4e00\u79cd\u5c06 AOF \u91cd\u5199\u7684\u7279\u6027\uff0c\u80fd\u591f\u53bb\u9664 AOF \u6587\u4ef6\u4e2d\u7684\u5197\u4f59\u5199\u547d\u4ee4\u3002<\/p>\n<h1>\u4e5d\u3001\u4e8b\u52a1<\/h1>\n<p>\u4e00\u4e2a\u4e8b\u52a1\u5305\u542b\u4e86\u591a\u4e2a\u547d\u4ee4\uff0c\u670d\u52a1\u5668\u5728\u6267\u884c\u4e8b\u52a1\u671f\u95f4\uff0c\u4e0d\u4f1a\u6539\u53bb\u6267\u884c\u5176\u5b83\u5ba2\u6237\u7aef\u7684\u547d\u4ee4\u8bf7\u6c42\u3002<\/p>\n<p>\u4e8b\u52a1\u4e2d\u7684\u591a\u4e2a\u547d\u4ee4\u88ab\u4e00\u6b21\u6027\u53d1\u9001\u7ed9\u670d\u52a1\u5668\uff0c\u800c\u4e0d\u662f\u4e00\u6761\u4e00\u6761\u53d1\u9001\uff0c\u8fd9\u79cd\u65b9\u5f0f\u88ab\u79f0\u4e3a\u6d41\u6c34\u7ebf\uff0c\u5b83\u53ef\u4ee5\u51cf\u5c11\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u7f51\u7edc\u901a\u4fe1\u6b21\u6570\u4ece\u800c\u63d0\u5347\u6027\u80fd\u3002<\/p>\n<p>Redis \u6700\u7b80\u5355\u7684\u4e8b\u52a1\u5b9e\u73b0\u65b9\u5f0f\u662f\u4f7f\u7528 MULTI \u548c EXEC \u547d\u4ee4\u5c06\u4e8b\u52a1\u64cd\u4f5c\u5305\u56f4\u8d77\u6765\u3002<\/p>\n<h1>\u5341\u3001\u4e8b\u4ef6<\/h1>\n<p>Redis \u670d\u52a1\u5668\u662f\u4e00\u4e2a\u4e8b\u4ef6\u9a71\u52a8\u7a0b\u5e8f\u3002<\/p>\n<h2>\u6587\u4ef6\u4e8b\u4ef6<\/h2>\n<p>\u670d\u52a1\u5668\u901a\u8fc7\u5957\u63a5\u5b57\u4e0e\u5ba2\u6237\u7aef\u6216\u8005\u5176\u5b83\u670d\u52a1\u5668\u8fdb\u884c\u901a\u4fe1\uff0c\u6587\u4ef6\u4e8b\u4ef6\u5c31\u662f\u5bf9\u5957\u63a5\u5b57\u64cd\u4f5c\u7684\u62bd\u8c61\u3002<\/p>\n<p>Redis \u57fa\u4e8e Reactor \u6a21\u5f0f\u5f00\u53d1\u4e86\u81ea\u5df1\u7684\u7f51\u7edc\u4e8b\u4ef6\u5904\u7406\u5668\uff0c\u4f7f\u7528 I\/O \u591a\u8def\u590d\u7528\u7a0b\u5e8f\u6765\u540c\u65f6\u76d1\u542c\u591a\u4e2a\u5957\u63a5\u5b57\uff0c\u5e76\u5c06\u5230\u8fbe\u7684\u4e8b\u4ef6\u4f20\u9001\u7ed9\u6587\u4ef6\u4e8b\u4ef6\u5206\u6d3e\u5668\uff0c\u5206\u6d3e\u5668\u4f1a\u6839\u636e\u5957\u63a5\u5b57\u4ea7\u751f\u7684\u4e8b\u4ef6\u7c7b\u578b\u8c03\u7528\u76f8\u5e94\u7684\u4e8b\u4ef6\u5904\u7406\u5668\u3002<\/p>\n<div align=\"center\"> <img src=\"pics\/9ea86eb5-000a-4281-b948-7b567bd6f1d8.png\" width=\"\"\/> <\/div>\n<p><\/p>\n<h2>\u65f6\u95f4\u4e8b\u4ef6<\/h2>\n<p>\u670d\u52a1\u5668\u6709\u4e00\u4e9b\u64cd\u4f5c\u9700\u8981\u5728\u7ed9\u5b9a\u7684\u65f6\u95f4\u70b9\u6267\u884c\uff0c\u65f6\u95f4\u4e8b\u4ef6\u662f\u5bf9\u8fd9\u7c7b\u5b9a\u65f6\u64cd\u4f5c\u7684\u62bd\u8c61\u3002<\/p>\n<p>\u65f6\u95f4\u4e8b\u4ef6\u53c8\u5206\u4e3a\uff1a<\/p>\n<ul>\n<li>\u5b9a\u65f6\u4e8b\u4ef6\uff1a\u662f\u8ba9\u4e00\u6bb5\u7a0b\u5e8f\u5728\u6307\u5b9a\u7684\u65f6\u95f4\u4e4b\u5185\u6267\u884c\u4e00\u6b21\uff1b<\/li>\n<li>\u5468\u671f\u6027\u4e8b\u4ef6\uff1a\u662f\u8ba9\u4e00\u6bb5\u7a0b\u5e8f\u6bcf\u9694\u6307\u5b9a\u65f6\u95f4\u5c31\u6267\u884c\u4e00\u6b21\u3002<\/li>\n<\/ul>\n<p>Redis \u5c06\u6240\u6709\u65f6\u95f4\u4e8b\u4ef6\u90fd\u653e\u5728\u4e00\u4e2a\u65e0\u5e8f\u94fe\u8868\u4e2d\uff0c\u901a\u8fc7\u904d\u5386\u6574\u4e2a\u94fe\u8868\u67e5\u627e\u51fa\u5df2\u5230\u8fbe\u7684\u65f6\u95f4\u4e8b\u4ef6\uff0c\u5e76\u8c03\u7528\u76f8\u5e94\u7684\u4e8b\u4ef6\u5904\u7406\u5668\u3002<\/p>\n<h2>\u4e8b\u4ef6\u7684\u8c03\u5ea6\u4e0e\u6267\u884c<\/h2>\n<p>\u670d\u52a1\u5668\u9700\u8981\u4e0d\u65ad\u76d1\u542c\u6587\u4ef6\u4e8b\u4ef6\u7684\u5957\u63a5\u5b57\u624d\u80fd\u5f97\u5230\u5f85\u5904\u7406\u7684\u6587\u4ef6\u4e8b\u4ef6\uff0c\u4f46\u662f\u4e0d\u80fd\u4e00\u76f4\u76d1\u542c\uff0c\u5426\u5219\u65f6\u95f4\u4e8b\u4ef6\u65e0\u6cd5\u5728\u89c4\u5b9a\u7684\u65f6\u95f4\u5185\u6267\u884c\uff0c\u56e0\u6b64\u76d1\u542c\u65f6\u95f4\u5e94\u8be5\u6839\u636e\u8ddd\u79bb\u73b0\u5728\u6700\u8fd1\u7684\u65f6\u95f4\u4e8b\u4ef6\u6765\u51b3\u5b9a\u3002<\/p>\n<p>\u4e8b\u4ef6\u8c03\u5ea6\u4e0e\u6267\u884c\u7531 aeProcessEvents \u51fd\u6570\u8d1f\u8d23\uff0c\u4f2a\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre class=\"brush: python; title: ; notranslate\" title=\"\">\ndef aeProcessEvents():\n    # \u83b7\u53d6\u5230\u8fbe\u65f6\u95f4\u79bb\u5f53\u524d\u65f6\u95f4\u6700\u63a5\u8fd1\u7684\u65f6\u95f4\u4e8b\u4ef6\n    time_event = aeSearchNearestTimer()\n    # \u8ba1\u7b97\u6700\u63a5\u8fd1\u7684\u65f6\u95f4\u4e8b\u4ef6\u8ddd\u79bb\u5230\u8fbe\u8fd8\u6709\u591a\u5c11\u6beb\u79d2\n    remaind_ms = time_event.when - unix_ts_now()\n    # \u5982\u679c\u4e8b\u4ef6\u5df2\u5230\u8fbe\uff0c\u90a3\u4e48 remaind_ms \u7684\u503c\u53ef\u80fd\u4e3a\u8d1f\u6570\uff0c\u5c06\u5b83\u8bbe\u4e3a 0\n    if remaind_ms &amp;lt; 0:\n        remaind_ms = 0\n    # \u6839\u636e remaind_ms \u7684\u503c\uff0c\u521b\u5efa timeval\n    timeval = create_timeval_with_ms(remaind_ms)\n    # \u963b\u585e\u5e76\u7b49\u5f85\u6587\u4ef6\u4e8b\u4ef6\u4ea7\u751f\uff0c\u6700\u5927\u963b\u585e\u65f6\u95f4\u7531\u4f20\u5165\u7684 timeval \u51b3\u5b9a\n    aeApiPoll(timeval)\n    # \u5904\u7406\u6240\u6709\u5df2\u4ea7\u751f\u7684\u6587\u4ef6\u4e8b\u4ef6\n    procesFileEvents()\n    # \u5904\u7406\u6240\u6709\u5df2\u5230\u8fbe\u7684\u65f6\u95f4\u4e8b\u4ef6\n    processTimeEvents()\n<\/pre>\n<p>\u5c06 aeProcessEvents \u51fd\u6570\u7f6e\u4e8e\u4e00\u4e2a\u5faa\u73af\u91cc\u9762\uff0c\u52a0\u4e0a\u521d\u59cb\u5316\u548c\u6e05\u7406\u51fd\u6570\uff0c\u5c31\u6784\u6210\u4e86 Redis \u670d\u52a1\u5668\u7684\u4e3b\u51fd\u6570\uff0c\u4f2a\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre class=\"brush: python; title: ; notranslate\" title=\"\">\ndef main():\n    # \u521d\u59cb\u5316\u670d\u52a1\u5668\n    init_server()\n    # \u4e00\u76f4\u5904\u7406\u4e8b\u4ef6\uff0c\u76f4\u5230\u670d\u52a1\u5668\u5173\u95ed\u4e3a\u6b62\n    while server_is_not_shutdown():\n        aeProcessEvents()\n    # \u670d\u52a1\u5668\u5173\u95ed\uff0c\u6267\u884c\u6e05\u7406\u64cd\u4f5c\n    clean_server()\n<\/pre>\n<p>\u4ece\u4e8b\u4ef6\u5904\u7406\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u670d\u52a1\u5668\u8fd0\u884c\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n<div align=\"center\"> <img src=\"pics\/c0a9fa91-da2e-4892-8c9f-80206a6f7047.png\" width=\"350\"\/> <\/div>\n<p><\/p>\n<h1>\u5341\u4e00\u3001\u590d\u5236<\/h1>\n<p>\u901a\u8fc7\u4f7f\u7528 slaveof host port \u547d\u4ee4\u6765\u8ba9\u4e00\u4e2a\u670d\u52a1\u5668\u6210\u4e3a\u53e6\u4e00\u4e2a\u670d\u52a1\u5668\u7684\u4ece\u670d\u52a1\u5668\u3002<\/p>\n<p>\u4e00\u4e2a\u4ece\u670d\u52a1\u5668\u53ea\u80fd\u6709\u4e00\u4e2a\u4e3b\u670d\u52a1\u5668\uff0c\u5e76\u4e14\u4e0d\u652f\u6301\u4e3b\u4e3b\u590d\u5236\u3002<\/p>\n<h2>\u8fde\u63a5\u8fc7\u7a0b<\/h2>\n<ol>\n<li>\u4e3b\u670d\u52a1\u5668\u521b\u5efa\u5feb\u7167\u6587\u4ef6\uff0c\u53d1\u9001\u7ed9\u4ece\u670d\u52a1\u5668\uff0c\u5e76\u5728\u53d1\u9001\u671f\u95f4\u4f7f\u7528\u7f13\u51b2\u533a\u8bb0\u5f55\u6267\u884c\u7684\u5199\u547d\u4ee4\u3002\u5feb\u7167\u6587\u4ef6\u53d1\u9001\u5b8c\u6bd5\u4e4b\u540e\uff0c\u5f00\u59cb\u5411\u4ece\u670d\u52a1\u5668\u53d1\u9001\u5b58\u50a8\u5728\u7f13\u51b2\u533a\u4e2d\u7684\u5199\u547d\u4ee4\uff1b<\/p>\n<\/li>\n<li>\n<p>\u4ece\u670d\u52a1\u5668\u4e22\u5f03\u6240\u6709\u65e7\u6570\u636e\uff0c\u8f7d\u5165\u4e3b\u670d\u52a1\u5668\u53d1\u6765\u7684\u5feb\u7167\u6587\u4ef6\uff0c\u4e4b\u540e\u4ece\u670d\u52a1\u5668\u5f00\u59cb\u63a5\u53d7\u4e3b\u670d\u52a1\u5668\u53d1\u6765\u7684\u5199\u547d\u4ee4\uff1b<\/p>\n<\/li>\n<li>\n<p>\u4e3b\u670d\u52a1\u5668\u6bcf\u6267\u884c\u4e00\u6b21\u5199\u547d\u4ee4\uff0c\u5c31\u5411\u4ece\u670d\u52a1\u5668\u53d1\u9001\u76f8\u540c\u7684\u5199\u547d\u4ee4\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u4e3b\u4ece\u94fe<\/h2>\n<p>\u968f\u7740\u8d1f\u8f7d\u4e0d\u65ad\u4e0a\u5347\uff0c\u4e3b\u670d\u52a1\u5668\u53ef\u80fd\u65e0\u6cd5\u5f88\u5feb\u5730\u66f4\u65b0\u6240\u6709\u4ece\u670d\u52a1\u5668\uff0c\u6216\u8005\u91cd\u65b0\u8fde\u63a5\u548c\u91cd\u65b0\u540c\u6b65\u4ece\u670d\u52a1\u5668\u5c06\u5bfc\u81f4\u7cfb\u7edf\u8d85\u8f7d\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u4e2d\u95f4\u5c42\u6765\u5206\u62c5\u4e3b\u670d\u52a1\u5668\u7684\u590d\u5236\u5de5\u4f5c\u3002\u4e2d\u95f4\u5c42\u7684\u670d\u52a1\u5668\u662f\u6700\u4e0a\u5c42\u670d\u52a1\u5668\u7684\u4ece\u670d\u52a1\u5668\uff0c\u53c8\u662f\u6700\u4e0b\u5c42\u670d\u52a1\u5668\u7684\u4e3b\u670d\u52a1\u5668\u3002<\/p>\n<div align=\"center\"> <img src=\"pics\/395a9e83-b1a1-4a1d-b170-d081e7bb5bab.png\" width=\"600\"\/> <\/div>\n<p><\/p>\n<h1>\u5341\u4e8c\u3001Sentinel<\/h1>\n<p>Sentinel\uff08\u54e8\u5175\uff09\u53ef\u4ee5\u76d1\u542c\u96c6\u7fa4\u4e2d\u7684\u670d\u52a1\u5668\uff0c\u5e76\u5728\u4e3b\u670d\u52a1\u5668\u8fdb\u5165\u4e0b\u7ebf\u72b6\u6001\u65f6\uff0c\u81ea\u52a8\u4ece\u4ece\u670d\u52a1\u5668\u4e2d\u9009\u4e3e\u51fa\u65b0\u7684\u4e3b\u670d\u52a1\u5668\u3002<\/p>\n<h1>\u5341\u4e09\u3001\u5206\u7247<\/h1>\n<p>\u5206\u7247\u662f\u5c06\u6570\u636e\u5212\u5206\u4e3a\u591a\u4e2a\u90e8\u5206\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5c06\u6570\u636e\u5b58\u50a8\u5230\u591a\u53f0\u673a\u5668\u91cc\u9762\uff0c\u8fd9\u79cd\u65b9\u6cd5\u5728\u89e3\u51b3\u67d0\u4e9b\u95ee\u9898\u65f6\u53ef\u4ee5\u83b7\u5f97\u7ebf\u6027\u7ea7\u522b\u7684\u6027\u80fd\u63d0\u5347\u3002<\/p>\n<p>\u5047\u8bbe\u6709 4 \u4e2a Reids \u5b9e\u4f8b R0\uff0cR1\uff0cR2\uff0cR3\uff0c\u8fd8\u6709\u5f88\u591a\u8868\u793a\u7528\u6237\u7684\u952e user:1\uff0cuser:2\uff0c&#8230; \uff0c\u6709\u4e0d\u540c\u7684\u65b9\u5f0f\u6765\u9009\u62e9\u4e00\u4e2a\u6307\u5b9a\u7684\u952e\u5b58\u50a8\u5728\u54ea\u4e2a\u5b9e\u4f8b\u4e2d\u3002<\/p>\n<ul>\n<li>\u6700\u7b80\u5355\u7684\u65b9\u5f0f\u662f\u8303\u56f4\u5206\u7247\uff0c\u4f8b\u5982\u7528\u6237 id \u4ece 0\\~1000 \u7684\u5b58\u50a8\u5230\u5b9e\u4f8b R0 \u4e2d\uff0c\u7528\u6237 id \u4ece 1001\\~2000 \u7684\u5b58\u50a8\u5230\u5b9e\u4f8b R1 \u4e2d\uff0c\u7b49\u7b49\u3002\u4f46\u662f\u8fd9\u6837\u9700\u8981\u7ef4\u62a4\u4e00\u5f20\u6620\u5c04\u8303\u56f4\u8868\uff0c\u7ef4\u62a4\u64cd\u4f5c\u4ee3\u4ef7\u5f88\u9ad8\u3002<\/li>\n<li>\u8fd8\u6709\u4e00\u79cd\u65b9\u5f0f\u662f\u54c8\u5e0c\u5206\u7247\uff0c\u4f7f\u7528 CRC32 \u54c8\u5e0c\u51fd\u6570\u5c06\u952e\u8f6c\u6362\u4e3a\u4e00\u4e2a\u6570\u5b57\uff0c\u518d\u5bf9\u5b9e\u4f8b\u6570\u91cf\u6c42\u6a21\u5c31\u80fd\u77e5\u9053\u5e94\u8be5\u5b58\u50a8\u7684\u5b9e\u4f8b\u3002<\/li>\n<\/ul>\n<p>\u6839\u636e\u6267\u884c\u5206\u7247\u7684\u4f4d\u7f6e\uff0c\u53ef\u4ee5\u5206\u4e3a\u4e09\u79cd\u5206\u7247\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li>\u5ba2\u6237\u7aef\u5206\u7247\uff1a\u5ba2\u6237\u7aef\u4f7f\u7528\u4e00\u81f4\u6027\u54c8\u5e0c\u7b49\u7b97\u6cd5\u51b3\u5b9a\u952e\u5e94\u5f53\u5206\u5e03\u5230\u54ea\u4e2a\u8282\u70b9\u3002<\/li>\n<li>\u4ee3\u7406\u5206\u7247\uff1a\u5c06\u5ba2\u6237\u7aef\u8bf7\u6c42\u53d1\u9001\u5230\u4ee3\u7406\u4e0a\uff0c\u7531\u4ee3\u7406\u8f6c\u53d1\u8bf7\u6c42\u5230\u6b63\u786e\u7684\u8282\u70b9\u4e0a\u3002<\/li>\n<li>\u670d\u52a1\u5668\u5206\u7247\uff1aRedis Cluster\u3002<\/li>\n<\/ul>\n<h1>\u5341\u56db\u3001\u4e00\u4e2a\u7b80\u5355\u7684\u8bba\u575b\u7cfb\u7edf\u5206\u6790<\/h1>\n<p>\u8be5\u8bba\u575b\u7cfb\u7edf\u529f\u80fd\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u53ef\u4ee5\u53d1\u5e03\u6587\u7ae0\uff1b<\/li>\n<li>\u53ef\u4ee5\u5bf9\u6587\u7ae0\u8fdb\u884c\u70b9\u8d5e\uff1b<\/li>\n<li>\u5728\u9996\u9875\u53ef\u4ee5\u6309\u6587\u7ae0\u7684\u53d1\u5e03\u65f6\u95f4\u6216\u8005\u6587\u7ae0\u7684\u70b9\u8d5e\u6570\u8fdb\u884c\u6392\u5e8f\u663e\u793a\u3002<\/li>\n<\/ul>\n<h2>\u6587\u7ae0\u4fe1\u606f<\/h2>\n<p>\u6587\u7ae0\u5305\u62ec\u6807\u9898\u3001\u4f5c\u8005\u3001\u8d5e\u6570\u7b49\u4fe1\u606f\uff0c\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u5f88\u5bb9\u6613\u6784\u5efa\u4e00\u5f20\u8868\u6765\u5b58\u50a8\u8fd9\u4e9b\u4fe1\u606f\uff0c\u5728 Redis \u4e2d\u53ef\u4ee5\u4f7f\u7528 HASH \u6765\u5b58\u50a8\u6bcf\u79cd\u4fe1\u606f\u4ee5\u53ca\u5176\u5bf9\u5e94\u7684\u503c\u7684\u6620\u5c04\u3002<\/p>\n<p>Redis \u6ca1\u6709\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7684\u8868\u8fd9\u4e00\u6982\u5ff5\u6765\u5c06\u540c\u79cd\u7c7b\u578b\u7684\u6570\u636e\u5b58\u653e\u5728\u4e00\u8d77\uff0c\u800c\u662f\u4f7f\u7528\u547d\u540d\u7a7a\u95f4\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\u8fd9\u4e00\u529f\u80fd\u3002\u952e\u540d\u7684\u524d\u9762\u90e8\u5206\u5b58\u50a8\u547d\u540d\u7a7a\u95f4\uff0c\u540e\u9762\u90e8\u5206\u7684\u5185\u5bb9\u5b58\u50a8 ID\uff0c\u901a\u5e38\u4f7f\u7528 : \u6765\u8fdb\u884c\u5206\u9694\u3002\u4f8b\u5982\u4e0b\u9762\u7684 HASH \u7684\u952e\u540d\u4e3a article:92617\uff0c\u5176\u4e2d article \u4e3a\u547d\u540d\u7a7a\u95f4\uff0cID \u4e3a 92617\u3002<\/p>\n<div align=\"center\"> <img src=\"pics\/7c54de21-e2ff-402e-bc42-4037de1c1592.png\" width=\"400\"\/> <\/div>\n<p><\/p>\n<h2>\u70b9\u8d5e\u529f\u80fd<\/h2>\n<p>\u5f53\u6709\u7528\u6237\u4e3a\u4e00\u7bc7\u6587\u7ae0\u70b9\u8d5e\u65f6\uff0c\u9664\u4e86\u8981\u5bf9\u8be5\u6587\u7ae0\u7684 votes \u5b57\u6bb5\u8fdb\u884c\u52a0 1 \u64cd\u4f5c\uff0c\u8fd8\u5fc5\u987b\u8bb0\u5f55\u8be5\u7528\u6237\u5df2\u7ecf\u5bf9\u8be5\u6587\u7ae0\u8fdb\u884c\u4e86\u70b9\u8d5e\uff0c\u9632\u6b62\u7528\u6237\u70b9\u8d5e\u6b21\u6570\u8d85\u8fc7 1\u3002\u53ef\u4ee5\u5efa\u7acb\u6587\u7ae0\u7684\u5df2\u6295\u7968\u7528\u6237\u96c6\u5408\u6765\u8fdb\u884c\u8bb0\u5f55\u3002<\/p>\n<p>\u4e3a\u4e86\u8282\u7ea6\u5185\u5b58\uff0c\u89c4\u5b9a\u4e00\u7bc7\u6587\u7ae0\u53d1\u5e03\u6ee1\u4e00\u5468\u4e4b\u540e\uff0c\u5c31\u4e0d\u80fd\u518d\u5bf9\u5b83\u8fdb\u884c\u6295\u7968\uff0c\u800c\u6587\u7ae0\u7684\u5df2\u6295\u7968\u96c6\u5408\u4e5f\u4f1a\u88ab\u5220\u9664\uff0c\u53ef\u4ee5\u4e3a\u6587\u7ae0\u7684\u5df2\u6295\u7968\u96c6\u5408\u8bbe\u7f6e\u4e00\u4e2a\u4e00\u5468\u7684\u8fc7\u671f\u65f6\u95f4\u5c31\u80fd\u5b9e\u73b0\u8fd9\u4e2a\u89c4\u5b9a\u3002<\/p>\n<div align=\"center\"> <img src=\"pics\/485fdf34-ccf8-4185-97c6-17374ee719a0.png\" width=\"400\"\/> <\/div>\n<p><\/p>\n<h2>\u5bf9\u6587\u7ae0\u8fdb\u884c\u6392\u5e8f<\/h2>\n<p>\u4e3a\u4e86\u6309\u53d1\u5e03\u65f6\u95f4\u548c\u70b9\u8d5e\u6570\u8fdb\u884c\u6392\u5e8f\uff0c\u53ef\u4ee5\u5efa\u7acb\u4e00\u4e2a\u6587\u7ae0\u53d1\u5e03\u65f6\u95f4\u7684\u6709\u5e8f\u96c6\u5408\u548c\u4e00\u4e2a\u6587\u7ae0\u70b9\u8d5e\u6570\u7684\u6709\u5e8f\u96c6\u5408\u3002\uff08\u4e0b\u56fe\u4e2d\u7684 score \u5c31\u662f\u8fd9\u91cc\u6240\u8bf4\u7684\u70b9\u8d5e\u6570\uff1b\u4e0b\u9762\u6240\u793a\u7684\u6709\u5e8f\u96c6\u5408\u5206\u503c\u5e76\u4e0d\u76f4\u63a5\u662f\u65f6\u95f4\u548c\u70b9\u8d5e\u6570\uff0c\u800c\u662f\u6839\u636e\u65f6\u95f4\u548c\u70b9\u8d5e\u6570\u95f4\u63a5\u8ba1\u7b97\u51fa\u6765\u7684\uff09<\/p>\n<div align=\"center\"> <img src=\"pics\/f7d170a3-e446-4a64-ac2d-cb95028f81a8.png\" width=\"800\"\/> <\/div>\n<p><\/p>\n<h1>\u53c2\u8003\u8d44\u6599<\/h1>\n<ul>\n<li>\n<ul>\n<li><a href=\"https:\/\/github.com\/CyC2018\/CS-Notes\" target=\"_blank\" rel=\"noopener\">\u53c2\u8003<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u53c2\u8003\u5730\u5740:https:\/\/github.com\/CyC2018\/CS-Notes \u4e00\u3001\u6982\u8ff0 Redis \u662f\u901f\u5ea6<a href=\"https:\/\/www.ccagml.com\/?p=249\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Redis\u57fa\u7840\u77e5\u8bc6<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[22],"tags":[],"_links":{"self":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts\/249"}],"collection":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=249"}],"version-history":[{"count":13,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts\/249\/revisions"}],"predecessor-version":[{"id":292,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts\/249\/revisions\/292"}],"wp:attachment":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=249"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=249"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}