Quickly solve the MISS cache miss problem in ThinkPHP5.1

This article brings you relevant knowledge about ThinkPHP5.1, which mainly introduces what is CDN? Why use it? How to solve the ThinkPHP5.1 MISS cache miss problem? Friends who are interested can take a look below. I hope it will be helpful to everyone.

ThinkPHP5.1 uses CDN acceleration-MISS cache miss solution

After configuring CDN acceleration for the home page alone, an error message appears X-Cache: MISS TCP_MISS dirn:-2:-2, MISS means the cache was not hit. This problem is not a misconfiguration, but a framework problem.

Why use CDN?

"Introduction to cdn The full name of CDN is Content Delivery Network, which is content distribution network.

Why use CDN?

CDN nearest node Access, improves website loading speed and reduces delay; can play a diversion role, reduce server load,

Use dynamic and static separation to improve website access speed.

Configuration implementation

As for this, I deployed it in a production environment to actually test large-concurrency and high-traffic processing. Of course, there are many shortcomings.

Environment

Server: Tencent Cloud

System: CentOS7

Framework: ThinkPHP5.1

Use Alibaba Cloud OSS CDN and configure cache

Of course there are A registered domain name.

Regarding how to use the Alibaba Cloud OSS object storage system, Laravel6.x uploads videos to the Alibaba Cloud Oss object storage. This article has recorded it.

After the bucket is created, you can See 'Alibaba Cloud CDN Acceleration' in the list. Click this to perform related CDN operations. After configuration, you need to resolve it in the domain name.

Question

In After configuring CDN acceleration for the home page alone, X-Cache: MISS TCP_MISS dirn:-2:-2 appeared. MISS means that the cache was not hit. This problem is not a configuration error, but a framework problem.

The solution is as follows:

The first step: public/index.php reads/sets the cache limiter

<?php
namespace think;

// 设置缓存限制
session_cache_limiter(&#39;public&#39;);

require __DIR__ . &#39;/../thinkphp/base.php&#39;;
Container::get(&#39;app&#39;)->run()->send();

The second step : Enable request caching

// 文件位置： config/app.php

'request_cache'          => true,

ab stress test

The following stress test is the result after CDN OSS. You can see that qps can reach 573

$ ab -c100 -n1000 你的页面URL

This is ApacheBench, Version 2.3 <$Revision: 1430300 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking miaosha.nikexu.com (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Completed 1000 requests
Finished 1000 requests
 

Server Software:        Tengine
Server Hostname:        miaosha.nikexu.com
Server Port:            80

Document Path:          /
Document Length:        774 bytes

Concurrency Level:      100
Time taken for tests:   1.745 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      1403829 bytes
HTML transferred:       774000 bytes
Requests per second:    573.16 [#/sec] (mean)
Time per request:       174.472 [ms] (mean)
Time per request:       1.745 [ms] (mean, across all concurrent requests)
Transfer rate:          785.76 [Kbytes/sec] received

Connection Times (ms)
             min  mean[+/-sd] median   max
Connect:       15   17   1.5     16      25
Processing:    18   91 113.4     71    1195
Waiting:       18   90 113.4     71    1195
Total:         36  107 113.4     87    1212

Percentage of the requests served within a certain time (ms)
 50%     87
 66%     99
 75%    103
 80%    105
 90%    120
 95%    195
 98%    437
 99%    834
100%   1212 (longest request)

Let’s take a look at the stress test of 500 concurrencies.

ab -c500 -n10000 你的页面URL

Requests per second:    965.61 [#/sec] (mean)
Time per request:       517.806 [ms] (mean)
Time per request:       1.036 [ms] (mean, across all concurrent requests)

Percentage of the requests served within a certain time (ms)
 50%    257
 66%    319
 75%    541
 80%   1043
 90%   1102
 95%   1281
 98%   1560
 99%   1821
100%   3771 (longest request)

Through these two methods, we can already see that the concurrency is provided. With 500 concurrency, 80% of users can achieve 500 concurrency in 1 second. Open left and right. Before using CDN OSS, the result of my stress test was 150 concurrency, and the CPU rushed to 90%. The advantages of using OSS CDN are self-evident.

Recommended study: "thinkPHP video tutorial》

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