{"id":155899,"date":"2024-11-02T19:19:23","date_gmt":"2024-11-02T11:19:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/155899\/"},"modified":"2024-11-02T19:19:25","modified_gmt":"2024-11-02T11:19:25","slug":"%e4%bb%bf%e7%9c%9f-redis-%e5%af%a6%e7%8f%be%e8%a8%98%e6%86%b6%e5%8a%9b%e8%a1%b0%e6%b8%9b%e6%a8%a1%e5%9e%8b%ef%bc%88%e4%bb%bf%e7%9c%9f-redis%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/155899\/","title":{"rendered":"\u4eff\u771f Redis \u5be6\u73fe\u8a18\u61b6\u529b\u8870\u6e1b\u6a21\u578b\uff08\u4eff\u771f Redis\uff09"},"content":{"rendered":"<h1 id=\"%e4%bb%bf%e7%9c%9f-redis-%e5%af%a6%e7%8f%be%e8%a8%98%e6%86%b6%e5%8a%9b%e8%a1%b0%e6%b8%9b%e6%a8%a1%e5%9e%8b%ef%bc%88%e4%bb%bf%e7%9c%9f-redis%ef%bc%89-yzjgLJJfnr\">\u4eff\u771f Redis \u5be6\u73fe\u8a18\u61b6\u529b\u8870\u6e1b\u6a21\u578b\uff08\u4eff\u771f Redis\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u8a18\u61b6\u529b\u8870\u6e1b\u6a21\u578b\u5728\u8a31\u591a\u61c9\u7528\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u89d2\u8272\uff0c\u7279\u5225\u662f\u5728\u6a5f\u5668\u5b78\u7fd2\u548c\u6578\u64da\u5206\u6790\u9818\u57df\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u6578\u64da\u7d50\u69cb\u548c\u64cd\u4f5c\u529f\u80fd\uff0c\u4f7f\u5176\u6210\u70ba\u5be6\u73fe\u8a18\u61b6\u529b\u8870\u6e1b\u6a21\u578b\u7684\u7406\u60f3\u9078\u64c7\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528 Redis \u4f86\u6a21\u64ec\u8a18\u61b6\u529b\u8870\u6e1b\u6a21\u578b\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u5be6\u73fe\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e8%a8%98%e6%86%b6%e5%8a%9b%e8%a1%b0%e6%b8%9b%e6%a8%a1%e5%9e%8b%e6%a6%82%e8%bf%b0-yzjgLJJfnr\">\u8a18\u61b6\u529b\u8870\u6e1b\u6a21\u578b\u6982\u8ff0<\/h2>\n<p>\u8a18\u61b6\u529b\u8870\u6e1b\u6a21\u578b\u4e3b\u8981\u7528\u65bc\u63cf\u8ff0\u4fe1\u606f\u96a8\u6642\u9593\u7684\u8870\u6e1b\u904e\u7a0b\u3002\u9019\u4e00\u6a21\u578b\u5728\u5fc3\u7406\u5b78\u3001\u795e\u7d93\u79d1\u5b78\u53ca\u8a08\u7b97\u6a5f\u79d1\u5b78\u4e2d\u90fd\u6709\u5ee3\u6cdb\u7684\u61c9\u7528\u3002\u57fa\u672c\u4e0a\uff0c\u9019\u500b\u6a21\u578b\u8a8d\u70ba\uff0c\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0c\u500b\u9ad4\u5c0d\u67d0\u4e00\u4fe1\u606f\u7684\u8a18\u61b6\u6703\u9010\u6f38\u6e1b\u5f31\u3002\u9019\u4e00\u904e\u7a0b\u53ef\u4ee5\u7528\u6578\u5b78\u516c\u5f0f\u4f86\u63cf\u8ff0\uff0c\u4f8b\u5982\u6307\u6578\u8870\u6e1b\u6a21\u578b\uff1a<\/p>\n<pre><code>f(t) = A * e^(-kt)<\/code><\/pre>\n<p>\u5176\u4e2d\uff0c<code>A<\/code> \u662f\u521d\u59cb\u8a18\u61b6\u5f37\u5ea6\uff0c<code>k<\/code> \u662f\u8870\u6e1b\u5e38\u6578\uff0c<code>t<\/code> \u662f\u6642\u9593\u3002\u9019\u4e00\u516c\u5f0f\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u7406\u89e3\u4fe1\u606f\u96a8\u6642\u9593\u7684\u8b8a\u5316\uff0c\u4e26\u70ba\u6211\u5011\u7684\u5be6\u73fe\u63d0\u4f9b\u7406\u8ad6\u57fa\u790e\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e7%89%b9%e6%80%a7-yzjgLJJfnr\">Redis \u7684\u7279\u6027<\/h2>\n<p>Redis \u662f\u4e00\u500b\u958b\u6e90\u7684\u9ad8\u6027\u80fd\u9375\u503c\u6578\u64da\u5eab\uff0c\u5177\u6709\u4ee5\u4e0b\u7279\u6027\uff1a<\/p>\n<ul>\n<li>\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\u3002<\/li>\n<li>\u63d0\u4f9b\u6301\u4e45\u5316\u9078\u9805\uff0c\u80fd\u5920\u5c07\u6578\u64da\u4fdd\u5b58\u5728\u78c1\u789f\u4e0a\u3002<\/li>\n<li>\u652f\u6301\u9ad8\u4f75\u767c\u64cd\u4f5c\uff0c\u9069\u5408\u7528\u65bc\u5be6\u6642\u61c9\u7528\u3002<\/li>\n<li>\u5177\u5099\u8c50\u5bcc\u7684\u547d\u4ee4\u96c6\uff0c\u65b9\u4fbf\u7528\u6236\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u7279\u6027\u4f7f\u5f97 Redis \u6210\u70ba\u5be6\u73fe\u8a18\u61b6\u529b\u8870\u6e1b\u6a21\u578b\u7684\u7406\u60f3\u5de5\u5177\uff0c\u56e0\u70ba\u6211\u5011\u53ef\u4ee5\u5229\u7528\u5176\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u548c\u64cd\u4f5c\u80fd\u529b\u4f86\u6a21\u64ec\u8a18\u61b6\u7684\u8870\u6e1b\u904e\u7a0b\u3002<\/p>\n<h2 id=\"%e5%af%a6%e7%8f%be%e8%a8%98%e6%86%b6%e5%8a%9b%e8%a1%b0%e6%b8%9b%e6%a8%a1%e5%9e%8b%e7%9a%84%e6%ad%a5%e9%a9%9f-yzjgLJJfnr\">\u5be6\u73fe\u8a18\u61b6\u529b\u8870\u6e1b\u6a21\u578b\u7684\u6b65\u9a5f<\/h2>\n<h3 id=\"1-%e8%a8%ad%e5%ae%9a-redis-%e7%92%b0%e5%a2%83-yzjgLJJfnr\">1. \u8a2d\u5b9a Redis \u74b0\u5883<\/h3>\n<p>\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5b89\u88dd Redis \u4e26\u555f\u52d5\u670d\u52d9\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u5b89\u88dd Redis\uff1a<\/p>\n<pre><code>sudo apt-get update\nsudo apt-get install redis-server<\/code><\/pre>\n<p>\u5b89\u88dd\u5b8c\u6210\u5f8c\uff0c\u555f\u52d5 Redis \u670d\u52d9\uff1a<\/p>\n<pre><code>sudo service redis-server start<\/code><\/pre>\n<h3 id=\"2-%e8%a8%ad%e8%a8%88%e6%95%b8%e6%93%9a%e7%b5%90%e6%a7%8b-yzjgLJJfnr\">2. \u8a2d\u8a08\u6578\u64da\u7d50\u69cb<\/h3>\n<p>\u5728 Redis \u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u54c8\u5e0c\u4f86\u5b58\u5132\u6bcf\u500b\u4fe1\u606f\u7684\u8a18\u61b6\u5f37\u5ea6\u548c\u6642\u9593\u6233\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u6bcf\u500b\u4fe1\u606f\uff0c\u6211\u5011\u53ef\u4ee5\u5b58\u5132\u5176 ID\u3001\u8a18\u61b6\u5f37\u5ea6\u548c\u6700\u5f8c\u8a2a\u554f\u6642\u9593\uff1a<\/p>\n<pre><code>HMSET memory:1 strength 100 timestamp 0<\/code><\/pre>\n<h3 id=\"3-%e5%af%a6%e7%8f%be%e8%a1%b0%e6%b8%9b%e9%82%8f%e8%bc%af-yzjgLJJfnr\">3. \u5be6\u73fe\u8870\u6e1b\u908f\u8f2f<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u7de8\u5beb\u4e00\u500b\u51fd\u6578\u4f86\u8a08\u7b97\u8a18\u61b6\u529b\u7684\u8870\u6e1b\u3002\u9019\u500b\u51fd\u6578\u5c07\u6839\u64da\u7576\u524d\u6642\u9593\u548c\u6700\u5f8c\u8a2a\u554f\u6642\u9593\u4f86\u66f4\u65b0\u8a18\u61b6\u5f37\u5ea6\uff1a<\/p>\n<pre><code>def decay_memory(redis_client, memory_id, current_time):\n    key = f'memory:{memory_id}'\n    strength = int(redis_client.hget(key, 'strength'))\n    timestamp = int(redis_client.hget(key, 'timestamp'))\n    \n    # \u8a08\u7b97\u6642\u9593\u5dee\n    time_diff = current_time - timestamp\n    decay_constant = 0.1  # \u8870\u6e1b\u5e38\u6578\n    new_strength = strength * (2.71828 ** (-decay_constant * time_diff))\n    \n    # \u66f4\u65b0\u8a18\u61b6\u5f37\u5ea6\u548c\u6642\u9593\u6233\n    redis_client.hset(key, 'strength', new_strength)\n    redis_client.hset(key, 'timestamp', current_time)\n<\/code><\/pre>\n<h3 id=\"4-%e6%b8%ac%e8%a9%a6%e6%a8%a1%e5%9e%8b-yzjgLJJfnr\">4. \u6e2c\u8a66\u6a21\u578b<\/h3>\n<p>\u6700\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u6e2c\u8a66\u9019\u500b\u6a21\u578b\uff0c\u89c0\u5bdf\u8a18\u61b6\u5f37\u5ea6\u96a8\u6642\u9593\u7684\u8b8a\u5316\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u4f86\u6a21\u64ec\u6642\u9593\u7684\u63a8\u79fb\u4e26\u6aa2\u67e5\u8a18\u61b6\u5f37\u5ea6\uff1a<\/p>\n<pre><code>import time\n\ncurrent_time = int(time.time())\ndecay_memory(redis_client, 1, current_time)\n\n# \u7b49\u5f85\u4e00\u6bb5\u6642\u9593\u5f8c\u518d\u6b21\u6aa2\u67e5\ntime.sleep(10)\ncurrent_time = int(time.time())\ndecay_memory(redis_client, 1, current_time)\n\n# \u8f38\u51fa\u65b0\u7684\u8a18\u61b6\u5f37\u5ea6\nprint(redis_client.hget(f'memory:1', 'strength'))<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-yzjgLJJfnr\">\u7d50\u8ad6<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u6211\u5011\u53ef\u4ee5\u5229\u7528 Redis \u6709\u6548\u5730\u5be6\u73fe\u8a18\u61b6\u529b\u8870\u6e1b\u6a21\u578b\u3002\u9019\u4e00\u6a21\u578b\u4e0d\u50c5\u80fd\u5920\u5e6b\u52a9\u6211\u5011\u7406\u89e3\u4fe1\u606f\u7684\u8870\u6e1b\u904e\u7a0b\uff0c\u9084\u80fd\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u63d0\u4f9b\u6709\u50f9\u503c\u7684\u898b\u89e3\u3002\u7121\u8ad6\u662f\u5728\u6578\u64da\u5206\u6790\u9084\u662f\u6a5f\u5668\u5b78\u7fd2\u4e2d\uff0c\u9019\u4e00\u6a21\u578b\u90fd\u80fd\u767c\u63ee\u91cd\u8981\u4f5c\u7528\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u96f2\u7aef\u74b0\u5883\u4e2d\u90e8\u7f72\u9019\u4e9b\u6a21\u578b\u611f\u8208\u8da3\uff0c\u6216\u8005\u9700\u8981\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\uff0c\u8acb\u96a8\u6642\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u4eff\u771f Redis \u5be6\u73fe\u8a18\u61b6\u529b\u8870\u6e1b\u6a21\u578b\u7684\u6280\u8853\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u512a\u5316\u8a18\u61b6\u9ad4\u4f7f\u7528\uff0c\u5be6\u73fe\u9ad8\u6548\u80fd\u6578\u64da\u5b58\u53d6\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-155899","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/155899","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=155899"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/155899\/revisions"}],"predecessor-version":[{"id":155900,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/155899\/revisions\/155900"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=155899"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=155899"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=155899"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}