{"id":167981,"date":"2024-11-06T08:31:18","date_gmt":"2024-11-06T00:31:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/167981\/"},"modified":"2024-11-06T08:31:19","modified_gmt":"2024-11-06T00:31:19","slug":"%e9%87%8f%e6%8e%a7%e5%88%b6%e4%bd%bf%e7%94%a8redis%e5%af%a6%e7%8f%be%e6%b5%81%e9%87%8f%e6%8e%a7%e5%88%b6%e7%9a%84%e7%aa%81%e7%a0%b4%e6%80%a7%e7%ad%96%e7%95%a5%ef%bc%88redis-%e6%b5%81%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/167981\/","title":{"rendered":"\u91cf\u63a7\u5236\u4f7f\u7528Redis\u5be6\u73fe\u6d41\u91cf\u63a7\u5236\u7684\u7a81\u7834\u6027\u7b56\u7565\uff08redis \u6d41\uff09"},"content":{"rendered":"<h1 id=\"%e9%87%8f%e6%8e%a7%e5%88%b6%e4%bd%bf%e7%94%a8redis%e5%af%a6%e7%8f%be%e6%b5%81%e9%87%8f%e6%8e%a7%e5%88%b6%e7%9a%84%e7%aa%81%e7%a0%b4%e6%80%a7%e7%ad%96%e7%95%a5%ef%bc%88redis-%e6%b5%81%ef%bc%89-xgLcCwrPFM\">\u91cf\u63a7\u5236\u4f7f\u7528Redis\u5be6\u73fe\u6d41\u91cf\u63a7\u5236\u7684\u7a81\u7834\u6027\u7b56\u7565\uff08redis \u6d41\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u6d41\u91cf\u63a7\u5236\u6210\u70ba\u4e86\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u7684\u95dc\u9375\u56e0\u7d20\u3002\u96a8\u8457\u7528\u6236\u6578\u91cf\u7684\u589e\u52a0\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u548c\u63a7\u5236\u6d41\u91cf\uff0c\u907f\u514d\u7cfb\u7d71\u904e\u8f09\uff0c\u6210\u70ba\u4e86\u958b\u767c\u8005\u548c\u904b\u71df\u8005\u9762\u81e8\u7684\u91cd\u8981\u6311\u6230\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u529f\u80fd\u4f86\u5be6\u73fe\u6d41\u91cf\u63a7\u5236\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u9ad8\u4e26\u767c\u8acb\u6c42\u6642\uff0cRedis\u7684\u512a\u52e2\u5c24\u70ba\u660e\u986f\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-xgLcCwrPFM\">Redis\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>Redis\u662f\u4e00\u500b\u958b\u6e90\u7684\u9ad8\u6027\u80fd\u9375\u503c\u6578\u64da\u5eab\uff0c\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\u3002\u7531\u65bc\u5176\u9ad8\u6548\u7684\u6578\u64da\u5b58\u53d6\u901f\u5ea6\u548c\u8c50\u5bcc\u7684\u529f\u80fd\uff0cRedis\u88ab\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6d41\u91cf\u63a7\u5236\u7b49\u5834\u666f\u3002<\/p>\n<h2 id=\"%e6%b5%81%e9%87%8f%e6%8e%a7%e5%88%b6%e7%9a%84%e5%bf%85%e8%a6%81%e6%80%a7-xgLcCwrPFM\">\u6d41\u91cf\u63a7\u5236\u7684\u5fc5\u8981\u6027<\/h2>\n<p>\u6d41\u91cf\u63a7\u5236\u7684\u4e3b\u8981\u76ee\u7684\u662f\u9632\u6b62\u7cfb\u7d71\u904e\u8f09\uff0c\u78ba\u4fdd\u670d\u52d9\u7684\u53ef\u7528\u6027\u548c\u7a69\u5b9a\u6027\u3002\u7576\u7528\u6236\u8acb\u6c42\u91cf\u8d85\u904e\u7cfb\u7d71\u7684\u8655\u7406\u80fd\u529b\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u670d\u52d9\u5d29\u6f70\u6216\u97ff\u61c9\u5ef6\u9072\u3002\u901a\u904e\u5be6\u65bd\u6d41\u91cf\u63a7\u5236\u7b56\u7565\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u8acb\u6c42\uff0c\u4fdd\u8b77\u5f8c\u7aef\u670d\u52d9\u7684\u7a69\u5b9a\u6027\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8redis%e5%af%a6%e7%8f%be%e6%b5%81%e9%87%8f%e6%8e%a7%e5%88%b6-xgLcCwrPFM\">\u4f7f\u7528Redis\u5be6\u73fe\u6d41\u91cf\u63a7\u5236<\/h2>\n<p>Redis\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u6d41\u91cf\u63a7\u5236\uff0c\u5176\u4e2d\u6700\u5e38\u898b\u7684\u7b56\u7565\u5305\u62ec\u4ee4\u724c\u6876\uff08Token Bucket\uff09\u548c\u6f0f\u6876\uff08Leaky Bucket\uff09\u7b97\u6cd5\u3002\u9019\u4e9b\u7b97\u6cd5\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u6839\u64da\u5be6\u969b\u9700\u6c42\u8a2d\u7f6e\u6d41\u91cf\u9650\u5236\u3002<\/p>\n<h3 id=\"%e4%bb%a4%e7%89%8c%e6%a1%b6%e7%ae%97%e6%b3%95-xgLcCwrPFM\">\u4ee4\u724c\u6876\u7b97\u6cd5<\/h3>\n<p>\u4ee4\u724c\u6876\u7b97\u6cd5\u662f\u4e00\u7a2e\u9748\u6d3b\u7684\u6d41\u91cf\u63a7\u5236\u7b56\u7565\uff0c\u5141\u8a31\u7a81\u767c\u6d41\u91cf\u7684\u51fa\u73fe\u3002\u5176\u57fa\u672c\u539f\u7406\u662f\uff1a\u7cfb\u7d71\u4ee5\u56fa\u5b9a\u7684\u901f\u7387\u751f\u6210\u4ee4\u724c\uff0c\u8acb\u6c42\u9700\u8981\u6d88\u8017\u4ee4\u724c\u624d\u80fd\u88ab\u8655\u7406\u3002\u5982\u679c\u6876\u4e2d\u6709\u4ee4\u724c\uff0c\u8acb\u6c42\u5c31\u53ef\u4ee5\u901a\u904e\uff1b\u5982\u679c\u6c92\u6709\uff0c\u8acb\u6c42\u5247\u6703\u88ab\u62d2\u7d55\u6216\u5ef6\u9072\u3002<\/p>\n<pre><code>\n# \u4f7f\u7528Redis\u5be6\u73fe\u4ee4\u724c\u6876\u7b97\u6cd5\u7684\u793a\u4f8b\u4ee3\u78bc\nimport redis\nimport time\n\nr = redis.Redis()\n\ndef allow_request(user_id):\n    current_time = int(time.time())\n    bucket_key = f\"token_bucket:{user_id}\"\n    \n    # \u521d\u59cb\u5316\u6876\n    if not r.exists(bucket_key):\n        r.hmset(bucket_key, {\"tokens\": 5, \"last_refill\": current_time})\n\n    tokens = int(r.hget(bucket_key, \"tokens\"))\n    last_refill = int(r.hget(bucket_key, \"last_refill\"))\n\n    # \u8a08\u7b97\u6642\u9593\u5dee\n    time_passed = current_time - last_refill\n    new_tokens = min(5, tokens + time_passed)  # \u6700\u5927\u4ee4\u724c\u6578\u70ba5\n    r.hset(bucket_key, \"tokens\", new_tokens)\n    r.hset(bucket_key, \"last_refill\", current_time)\n\n    if new_tokens &gt; 0:\n        r.hincrby(bucket_key, \"tokens\", -1)  # \u6d88\u8017\u4e00\u500b\u4ee4\u724c\n        return True  # \u5141\u8a31\u8acb\u6c42\n    else:\n        return False  # \u62d2\u7d55\u8acb\u6c42\n<\/code><\/pre>\n<h3 id=\"%e6%bc%8f%e6%a1%b6%e7%ae%97%e6%b3%95-xgLcCwrPFM\">\u6f0f\u6876\u7b97\u6cd5<\/h3>\n<p>\u6f0f\u6876\u7b97\u6cd5\u5247\u662f\u4ee5\u56fa\u5b9a\u7684\u901f\u7387\u8655\u7406\u8acb\u6c42\uff0c\u7121\u8ad6\u8acb\u6c42\u7684\u5230\u9054\u901f\u7387\u5982\u4f55\uff0c\u7cfb\u7d71\u90fd\u6703\u4ee5\u7a69\u5b9a\u7684\u901f\u7387\u5c07\u8acb\u6c42\u8655\u7406\u5b8c\u7562\u3002\u9019\u7a2e\u65b9\u6cd5\u9069\u5408\u65bc\u9700\u8981\u7a69\u5b9a\u8f38\u51fa\u6d41\u91cf\u7684\u5834\u666f\u3002<\/p>\n<pre><code>\n# \u4f7f\u7528Redis\u5be6\u73fe\u6f0f\u6876\u7b97\u6cd5\u7684\u793a\u4f8b\u4ee3\u78bc\nimport redis\nimport time\n\nr = redis.Redis()\n\ndef allow_request(user_id):\n    bucket_key = f\"leaky_bucket:{user_id}\"\n    \n    # \u521d\u59cb\u5316\u6f0f\u6876\n    if not r.exists(bucket_key):\n        r.hmset(bucket_key, {\"water\": 0, \"last_drain\": int(time.time())})\n\n    water = int(r.hget(bucket_key, \"water\"))\n    last_drain = int(r.hget(bucket_key, \"last_drain\"))\n\n    # \u8a08\u7b97\u6642\u9593\u5dee\n    time_passed = int(time.time()) - last_drain\n    drained_water = time_passed * 1  # \u6bcf\u79d2\u6392\u51fa1\u55ae\u4f4d\u6c34\n    new_water = max(0, water - drained_water)  # \u66f4\u65b0\u6c34\u4f4d\n    r.hset(bucket_key, \"water\", new_water)\n    r.hset(bucket_key, \"last_drain\", int(time.time()))\n\n    if new_water &lt; 10:  # \u6f0f\u6876\u6700\u5927\u5bb9\u91cf\u70ba10\n        r.hincrby(bucket_key, &quot;water&quot;, 1)  # \u52a0\u6c34\n        return True  # \u5141\u8a31\u8acb\u6c42\n    else:\n        return False  # \u62d2\u7d55\u8acb\u6c42\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-xgLcCwrPFM\">\u7d50\u8ad6<\/h2>\n<p>\u4f7f\u7528Redis\u5be6\u73fe\u6d41\u91cf\u63a7\u5236\u662f\u4e00\u7a2e\u9ad8\u6548\u4e14\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u4ee4\u724c\u6876\u548c\u6f0f\u6876\u7b97\u6cd5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u5be6\u969b\u9700\u6c42\u8a2d\u7f6e\u6d41\u91cf\u9650\u5236\uff0c\u5f9e\u800c\u4fdd\u8b77\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u7528\u6027\u3002\u96a8\u8457\u696d\u52d9\u7684\u589e\u9577\uff0c\u6d41\u91cf\u63a7\u5236\u5c07\u6210\u70ba\u6bcf\u500b\u958b\u767c\u8005\u5fc5\u9808\u638c\u63e1\u7684\u6280\u80fd\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc<code>VPS<\/code>\u3001<code>\u9999\u6e2fVPS<\/code>\u53ca\u5176\u4ed6\u4f3a\u670d\u5668\u89e3\u6c7a\u65b9\u6848\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528Redis\u6d41\u91cf\u63a7\u5236\u5be6\u73fe\u91cf\u63a7\u5236\u7684\u7a81\u7834\u6027\u7b56\u7565\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u8207\u7a69\u5b9a\u6027\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-167981","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/167981","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=167981"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/167981\/revisions"}],"predecessor-version":[{"id":167982,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/167981\/revisions\/167982"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=167981"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=167981"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=167981"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}