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Dmitriy Dumanskiy 2e433889b2 Improve DateFormatter parsing performance (#8821)
Motivation:

Just was looking through code and found 1 interesting place DateFormatter.tryParseMonth that was not very effective, so I decided to optimize it a bit.

Modification:

Changed DateFormatter.tryParseMonth method. Instead of invocation regionMatch() for every month - compare chars one by one.

Result:

DateFormatter.parseHttpDate method performance improved from ~3% to ~15%.

Benchmark                                                                (DATE_STRING)   Mode  Cnt        Score       Error  Units
DateFormatter2Benchmark.parseHttpHeaderDateFormatter     Sun, 27 Jan 2016 19:18:46 GMT  thrpt    6  4142781.221 ± 82155.002  ops/s
DateFormatter2Benchmark.parseHttpHeaderDateFormatter     Sun, 27 Dec 2016 19:18:46 GMT  thrpt    6  3781810.558 ± 38679.061  ops/s
DateFormatter2Benchmark.parseHttpHeaderDateFormatterNew  Sun, 27 Jan 2016 19:18:46 GMT  thrpt    6  4372569.705 ± 30257.537  ops/s
DateFormatter2Benchmark.parseHttpHeaderDateFormatterNew  Sun, 27 Dec 2016 19:18:46 GMT  thrpt    6  4339785.100 ± 57542.660  ops/s
2019-02-04 10:04:35 +01:00
.github Use GitHub Issue/PR Template Feature 2016-12-07 11:40:26 -08:00
.mvn support publishing snapshots from docker based ci (#8634) 2018-12-07 06:16:39 +01:00
all Remove OIO transport (and transports that depend on it). (#8580) 2018-11-21 15:23:18 +01:00
bom Remove OIO transport (and transports that depend on it). (#8580) 2018-11-21 15:23:18 +01:00
buffer CompositeByteBuf tidy-up (#8784) 2019-02-01 10:32:02 +01:00
codec Improve DateFormatter parsing performance (#8821) 2019-02-04 10:04:35 +01:00
codec-dns Java 8 migration. Remove ThreadLocalProvider and inline java.util.concurrent.ThreadLocalRandom.current() where necessary. (#8762) 2019-01-22 20:14:28 +01:00
codec-haproxy migrate java8 (#8779) 2019-01-28 05:55:30 +01:00
codec-http Selective Message Aggregation (#8793) 2019-02-04 09:58:40 +01:00
codec-http2 Remove ChannelHandler.exceptionCaught(...) as it should only exist in… (#8822) 2019-01-31 20:29:17 +01:00
codec-memcache Correcting Maven Dependencies (#8622) 2018-12-06 09:02:00 +01:00
codec-mqtt Java 8 migration: Use diamond operator (#8749) 2019-01-22 16:07:26 +01:00
codec-redis Java 8 migration: Use diamond operator (#8749) 2019-01-22 16:07:26 +01:00
codec-smtp migrate java8 (#8779) 2019-01-28 05:55:30 +01:00
codec-socks migrate java8: use lambda and method reference (#8781) 2019-01-29 14:06:05 +01:00
codec-stomp Remove support for marking reader and writerIndex in ByteBuf to reduce overhead and complexity. (#8636) 2018-12-11 14:00:49 +01:00
codec-xml Update to new checkstyle plugin (#8777) 2019-01-24 16:24:19 +01:00
common Improve DateFormatter parsing performance (#8821) 2019-02-04 10:04:35 +01:00
dev-tools Update version number to start working on Netty 5 2018-11-20 15:49:57 +01:00
docker Update to latest JDK8 and JDK11 releases (#8725) 2019-01-17 09:14:42 +01:00
example Compare HttpMethod by reference (#8815) 2019-01-30 21:17:24 +01:00
handler migrate java8: use lambda and method reference (#8781) 2019-01-29 14:06:05 +01:00
handler-proxy http-proxy: attach headers to connection exception (#8824) 2019-02-02 07:24:49 +01:00
license Add the NOTICE of the forked portion of Apache Harmony 2018-01-30 11:22:51 +01:00
microbench Improve DateFormatter parsing performance (#8821) 2019-02-04 10:04:35 +01:00
resolver migrate java8: use lambda and method reference (#8781) 2019-01-29 14:06:05 +01:00
resolver-dns migrate java8: use lambda and method reference (#8781) 2019-01-29 14:06:05 +01:00
tarball Update version number to start working on Netty 5 2018-11-20 15:49:57 +01:00
testsuite Reduce GC produced by native DatagramChannel implementations when in connected mode. (#8806) 2019-02-01 10:29:55 +01:00
testsuite-autobahn Compare HttpMethod by reference (#8815) 2019-01-30 21:17:24 +01:00
testsuite-http2 use checkPositive/checkPositiveOrZero (#8803) 2019-01-31 09:06:59 +01:00
testsuite-osgi Java 8 migration: Use diamond operator (#8749) 2019-01-22 16:07:26 +01:00
testsuite-shading Update version number to start working on Netty 5 2018-11-20 15:49:57 +01:00
transport Remove ChannelHandler.exceptionCaught(...) as it should only exist in… (#8822) 2019-01-31 20:29:17 +01:00
transport-native-epoll Reduce direct memory overhead per EpollEventLoop when using EpollDatagramChannel (#8825) 2019-02-02 07:14:53 +01:00
transport-native-kqueue Reduce GC produced by native DatagramChannel implementations when in connected mode. (#8806) 2019-02-01 10:29:55 +01:00
transport-native-unix-common use checkPositive/checkPositiveOrZero (#8803) 2019-01-31 09:06:59 +01:00
transport-native-unix-common-tests Correcting Maven Dependencies (#8622) 2018-12-06 09:02:00 +01:00
transport-sctp use checkPositive/checkPositiveOrZero (#8803) 2019-01-31 09:06:59 +01:00
.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 Exclude mainframer related files from git 2018-10-14 13:20:18 +02:00
CONTRIBUTING.md Move the pull request guide to the developer guide 2014-03-12 13:13:58 +09:00
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 Add the NOTICE of the forked portion of Apache Harmony 2018-01-30 11:22:51 +01:00
pom.xml Update to new checkstyle plugin (#8777) 2019-01-24 16:24:19 +01:00
README.md Provide an Automatic-Module-Name for the netty-all artifact fixes #7644 2018-01-27 20:31:16 +01:00
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.