Skip to content

docs: add default threads count about NioEventLoopGroup #3221

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: main
Choose a base branch
from
Open

docs: add default threads count about NioEventLoopGroup #3221

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
10 changes: 6 additions & 4 deletions src/main/java/io/lettuce/core/AbstractRedisClient.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -68,10 +68,12 @@

/**
* Base Redis client. This class holds the netty infrastructure, {@link ClientOptions} and the basic connection procedure. This
* class creates the netty {@link EventLoopGroup}s for NIO ({@link NioEventLoopGroup}) and EPoll (
* {@link io.netty.channel.epoll.EpollEventLoopGroup}) with a default of {@code Runtime.getRuntime().availableProcessors() * 4}
* threads. Reuse the instance as much as possible since the {@link EventLoopGroup} instances are expensive and can consume a
* huge part of your resources, if you create multiple instances.
* class creates the netty {@link EventLoopGroup}s for NIO ({@link NioEventLoopGroup}) with a default of
* {@code SystemPropertyUtil.getInt("io.netty.eventLoopThreads", Math.max(MIN_IO_THREADS, Runtime.getRuntime().availableProcessors()))}
* threads and EPoll ({@link io.netty.channel.epoll.EpollEventLoopGroup}) with a default of
* {@code Runtime.getRuntime().availableProcessors() * 4} threads. Reuse the instance as much as possible since the
* {@link EventLoopGroup} instances are expensive and can consume a huge part of your resources, if you create multiple
* instances.
* <p>
* You can set the number of threads per {@link NioEventLoopGroup} by setting the {@code io.netty.eventLoopThreads} system
* property to a reasonable number of threads.
Expand Down