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Norman Maurer 97361fa2c8
Replace synchronized usage with ConcurrentHashMap in *Bootstrap classes (#9458)
Motivation:

In AbstractBoostrap, options and attrs are LinkedHashMap that are synchronized on for every read, copy/clone, write operation.
When a lot of connections are triggered concurrently on the same bootstrap instance, the synchronized blocks lead to contention, Netty IO threads get blocked, and performance may be severely degraded.

Modifications:

Use ConcurrentHashMap

Result:

Less contention. Fixes https://github.com/netty/netty/issues/9426
2019-08-16 15:18:17 +02:00
.github Change the netty.io homepage scheme(http -> https) (#9344) 2019-07-09 21:09:42 +02:00
.mvn support publishing snapshots from docker based ci (#8634) 2018-12-07 05:43:06 +01:00
all [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
bom [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
buffer Don't zero non-readable buffer regions when capacity is decreased (#9427) 2019-08-16 08:18:09 +02:00
codec [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
codec-dns [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
codec-haproxy [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
codec-http Fix possible NPE when using HttpClientCodec (#9465) 2019-08-16 08:17:18 +02:00
codec-http2 HTTP2: Update local flow-controller on Channel.read() if needed (#9400) 2019-08-16 09:27:47 +02:00
codec-memcache [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
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common EPOLL - decouple schedule tasks from epoll_wait life cycle (#7834) 2019-08-14 10:11:04 +02:00
dev-tools [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
docker Cleanup docker / docker-compose configs (#9473) 2019-08-16 13:59:36 +02:00
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license Use Table lookup for HPACK decoder (#9307) 2019-07-02 20:09:44 +02:00
microbench [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
resolver [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
resolver-dns DnsNameResolverTest.testTruncated0(...) should only close socket once envelope is received (#9469) 2019-08-15 16:28:22 +02:00
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transport Replace synchronized usage with ConcurrentHashMap in *Bootstrap classes (#9458) 2019-08-16 15:18:17 +02:00
transport-native-epoll EPOLL - decouple schedule tasks from epoll_wait life cycle (#7834) 2019-08-14 10:11:04 +02:00
transport-native-kqueue [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
transport-native-unix-common [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
transport-native-unix-common-tests [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
transport-rxtx [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
transport-sctp [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
transport-udt [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
.fbprefs Updated Find Bugs configuration 2009-03-04 10:33:09 +00:00
.gitattributes Include mvn wrapper to make setup of development env easier 2018-01-26 08:13:17 +01:00
.gitignore Add .gitignore for docker-sync stuff 2019-03-19 14:03:15 +01:00
CONTRIBUTING.md Change the netty.io homepage scheme(http -> https) (#9344) 2019-07-09 21:09:42 +02:00
LICENSE.txt Relicensed to Apache License v2 2009-08-28 07:15:49 +00:00
mvnw Include mvn wrapper to make setup of development env easier 2018-01-26 08:13:17 +01:00
mvnw.cmd Include mvn wrapper to make setup of development env easier 2018-01-26 08:13:17 +01:00
NOTICE.txt Change the netty.io homepage scheme(http -> https) (#9344) 2019-07-09 21:09:42 +02:00
pom.xml [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
README.md Change the netty.io homepage scheme(http -> https) (#9344) 2019-07-09 21:09:42 +02:00
run-example.sh Add UptimeServer and adjust UptimeClient's code style. 2017-04-28 07:41:07 +02:00

Netty Project

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.

How to build

For the detailed information about building and developing Netty, please visit the developer guide. This page only gives very basic information.

You require the following to build Netty:

Note that this is build-time requirement. JDK 5 (for 3.x) or 6 (for 4.0+) is enough to run your Netty-based application.

Branches to look

Development of all versions takes place in each branch whose name is identical to <majorVersion>.<minorVersion>. For example, the development of 3.9 and 4.0 resides in the branch '3.9' and the branch '4.0' respectively.

Usage with JDK 9

Netty can be used in modular JDK9 applications as a collection of automatic modules. The module names follow the reverse-DNS style, and are derived from subproject names rather than root packages due to historical reasons. They are listed below:

  • io.netty.all
  • io.netty.buffer
  • io.netty.codec
  • io.netty.codec.dns
  • io.netty.codec.haproxy
  • io.netty.codec.http
  • io.netty.codec.http2
  • io.netty.codec.memcache
  • io.netty.codec.mqtt
  • io.netty.codec.redis
  • io.netty.codec.smtp
  • io.netty.codec.socks
  • io.netty.codec.stomp
  • io.netty.codec.xml
  • io.netty.common
  • io.netty.handler
  • io.netty.handler.proxy
  • io.netty.resolver
  • io.netty.resolver.dns
  • io.netty.transport
  • io.netty.transport.epoll (native omitted - reserved keyword in Java)
  • io.netty.transport.kqueue (native omitted - reserved keyword in Java)
  • io.netty.transport.unix.common (native omitted - reserved keyword in Java)
  • io.netty.transport.rxtx
  • io.netty.transport.sctp
  • io.netty.transport.udt

Automatic modules do not provide any means to declare dependencies, so you need to list each used module separately in your module-info file.