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This article mainly introduces how to optimize the configuration of Tomcat, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

I. Tomcat memory optimization

Tomcat memory optimization is mainly to optimize tomcat startup parameters. We can set java_OPTS parameters in tomcat startup script catalina.sh.

JAVA_OPTS parameter description

Server server version of jdk enabled

-minimum memory for initialization of the Xms java virtual machine

-maximum memory available to the Xmx java virtual machine

-XX: PermSize memory permanently reserved area

-maximum permanent reserved area of XX:MaxPermSize memory

Server parameter configuration

At present, the memory of the company's server can generally be increased to a maximum of 2G, so the following configuration can be adopted:

JAVA_OPTS='-Xms1024m-Xmx2048m-XX: PermSize=256M-XX:MaxNewSize=256m-XX:MaxPermSize=256m'

Restart Tomcat after the configuration is completed, and check whether the configuration takes effect by using the following command:

First check the Tomcat process number:

Sudo lsof-iPUR 9027

We can see that the Tomcat process number is 12222.

Check to see if the configuration takes effect:

Sudo jmap-heap 12222

We can see that parameters such as MaxHeapSize are already in effect.

II. Tomcat concurrency optimization

Parameters related to 1.Tomcat connection

In the Tomcat configuration file server.xml

two。 Adjust the concurrency processing capability of connector connector

1 > Parameter description

Maximum number of threads requested by maxThreads customer

Number of socket threads created during minSpareThreads Tomcat initialization

Maximum number of idle socket threads for maxSpareThreads Tomcat connector

If enableLookups is set to true, domain name resolution is supported, and ip addresses can be resolved to host names.

RedirectPort forwards customer requests to SSL-based redirectPort ports where secure channels are needed

Maximum number of acceptAccount listening port queues. Customer requests will be rejected when they are full (not less than maxSpareThreads)

ConnectionTimeout connection timed out

Minimum number of processing threads when the minProcessors server is created

Maximum number of threads processed by maxProcessors server at a time

URIEncoding URL unified coding

2 > configuration examples in Tomcat

3.Tomcat cache optimization

1 > Parameter description

C ompression turns on compression function

CompressionMinSize enables compressed output content size, which defaults to 2KB.

CompressableMimeType compression type

ConnectionTimeout defines the timeout for establishing a customer connection. If-1, there is no limit on the time to establish a customer connection

2 > configuration examples in Tomcat

4. Reference configuration

1 > Old configuration

Refer to the network to configure the server as follows, share it:

Later, it was found that there was a performance bottleneck when the number of visitors reached more than 3 million.

2 > changed configuration

Thank you for reading this article carefully. I hope the article "how to optimize Tomcat configuration" shared by the editor will be helpful to everyone. At the same time, I also hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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