Nội dung
In today’s article, AZDIGI will show you enable LSCache on DirectAdmin to increase the performance of Litespeed Webserver.
I. What is LSCache?
LiteSpeed Cache (LSCache) is a high-performance dynamic content acceleration feature built into LiteSpeed server products.
LSCache accelerates dynamic content (not just PHP pages), with the same features as in Apache mod_cache, using a highly customizable, efficient native implementation in LiteSpeed server, greatly reducing load times page and server load.
LSCache removes the reverse proxy layers required by additional caching packages (such as Varnish), providing faster, more efficient handling of static content in addition to dynamic content processing.
Note: Many of you misunderstand LSCache and LiteSpeed Cache Plugin for WordPress as the same thing. And in this article, I only mentioned LSCache configured on the server.
II. How to enable LSCache on DirectAdmin
To enable LSCache on DirectAdmin, follow these 3 steps.
Step 1: SSH into your DirectAdmin system
To enable LSCache on DirectAdmin, we first need to SSH or access your VPS/server with root privileges. If you don’t know how to SSH into your VPS/Server, you can refer to the following tutorial:
After successfully SSHing we continue with step 2 to set the root cache storage area on the server.
Step 2: Set the cache storage area on the server
To do this, you need to edit the file /etc/httpd/conf/extra/httpd-includes.conf with the following command:
vi /etc/httpd/conf/extra/httpd-includes.conf
Then add the following content to this file:
CacheRoot /home/lscache/
By default, the directory /home/lscache/ will exist after installing Litespeed on DirectAdmin. However, if the check is not there, you can create this directory and assign valid permissions with the following commands:
cd /home/
mkdir lscache
chmod 751 lscache
chown apache:apache lscache
If you want to cache the LSCache in a different directory, you can still change it to your liking.
Step 3: Set cache on the server for all users
Similar to step 2, we also need to create a directory and a file with the following commands:
cd /usr/local/directadmin/data/templates/
mkdir custom
chown diradmin:diradmin custom
vi /usr/local/directadmin/data/templates/custom/cust_httpd.CUSTOM.2.pre
Then add the following content to this file:
CacheRoot lscache
This will create a lscache directory in the user’s root directory (/home/<user>/lscache
Apply these changes to all users by running the following command:
cd /usr/local/directadmin/custombuild
./build rewrite_confs
Then you can see, in the root directory of the existing users, added the lscache directory.
Finally, let’s restart lsws again.
service lsws restart
Here are the results I got when running with ApacheBench (100 connections from 10 different users) before enabling LSCache:
[root@sv lscache]# ab -n 100 -c 10 https://lscachebench.domain.com/
This is ApacheBench, Version 2.3
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking lscachebench.domain.com (be patient).....done
Server Software: LiteSpeed
Server Hostname: lscachebench.domain.com
Server Port: 443
SSL/TLS Protocol: TLSv1.2,ECDHE-ECDSA-AES128-GCM-SHA256,384,128
Server Temp Key: ECDH P-256 256 bits
TLS Server Name: lscachebench.domain.com
Document Path: /
Document Length: 150032 bytes
Concurrency Level: 10
Time taken for tests: 30.011 seconds
Complete requests: 100
Failed requests: 0
Total transferred: 15035596 bytes
HTML transferred: 14991496 bytes
Requests per second: 3.33 [#/sec] (mean)
Time per request: 3001.057 [ms] (mean)
Time per request: 300.106 [ms] (mean, across all concurrent requests)
Transfer rate: 489.27 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 5 19 12.5 15 51
Processing: 1459 2825 445.3 2878 3823
Waiting: 888 2138 351.0 2149 2995
Total: 1466 2844 446.0 2895 3858
Percentage of the requests served within a certain time (ms)
50% 2895
66% 3079
75% 3180
80% 3230
90% 3377
95% 3486
98% 3740
99% 3858
100% 3858 (longest request)
Here are the results I got when running with ApacheBench (100 connections from 10 different users) after enabling LSCache:
[root@sv lscache]# ab -n 100 -c 100 https://lscachebench.domain.com/
This is ApacheBench, Version 2.3
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking lscachebench.domain.com (be patient).....done
Server Software: LiteSpeed
Server Hostname: lscachebench.domain.com
Server Port: 443
SSL/TLS Protocol: TLSv1.2,ECDHE-ECDSA-AES128-GCM-SHA256,384,128
Server Temp Key: ECDH P-256 256 bits
TLS Server Name: lscachebench.domain.com
Document Path: /
Document Length: 149938 bytes
Concurrency Level: 100
Time taken for tests: 0.569 seconds
Complete requests: 100
Failed requests: 0
Total transferred: 15045200 bytes
HTML transferred: 14993800 bytes
Requests per second: 175.75 [#/sec] (mean)
Time per request: 568.981 [ms] (mean)
Time per request: 5.690 [ms] (mean, across all concurrent requests)
Transfer rate: 25822.62 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 6 237 82.2 292 302
Processing: 192 278 60.7 254 437
Waiting: 1 101 57.9 91 172
Total: 443 515 28.6 523 558
Percentage of the requests served within a certain time (ms)
50% 523
66% 541
75% 545
80% 546
90% 549
95% 549
98% 550
99% 558
100% 558 (longest request)
In the above two results, I changed my domain to domain.com. And I also have a complete WordPress sales website installed and fully configured SSL.
The above two results show that after having LSCache, the ability to handle the number of requests is almost 51 times higher. My VPS only has 1 Core 2GB RAM, so the new results are so low. If you use a VPS or a server with much larger resources, the results will likely differ.
You can check if LSCache is up and running by checking that the Header should be LiteSpeed server and the X-LiteSpeed-Cache should be hit.
III. Summary
Hopefully, through this article, you will expand the power of your LiteSpeed Webserver.
Hope this article will be of help to you. Wishing you success!
References: https://docs.litespeedtech.com/cp/directadmin/
See more useful articles about DirectAdmin at the following link:
If you need assistance, you can contact support in the ways below:
- Hotline 247: 028 888 24768 (Ext 0)
- Ticket/Email: You use the email to register for the service and send it directly to: support@azdigi.com .
- Website AZDIGI: https://azdigi.com/
