Async Logger
Modby decce
Asynchronous logging and efficient filtering - performance improvements and utility for keeping your logs clean
Type
Mod
CurseForge Downloads
972,212
CurseForge ID
1491426
Modrinth Downloads
1,386,468
Modrinth ID
zvNzKfGF
Last Updated
Sep 10, 2026
Description
Async Logger is a Minecraft mod that makes logging operations asynchronous.
In vanilla, loggers are not asynchronous. This means the actual logging operations, including I/O operations, happen on the logging thread. This mod changes logging to be asynchronous for better performance.
This can be especially useful when large amounts of messages are being logged and/or debug logging is enabled (default on Forge / NeoForge).
Benchmarks
Item Vanilla AsyncLogger Simple Messages (10k) 6146.1ms 141.2ms Messages with Placeholders (10k) 6413.2ms 96.6ms Messages with Throwable (1.5k) 19572.4ms 9.0msYou can do these tests yourself by enabling testPerformance in the config. When this option is enabled, the mod will log a large number of messages both before and after setting up async loggers. You can see the test results in the log.
Technical Details
- Asynchronous loggers are used, in favor of Asynchronous appenders. The former is newer, faster and lighter on allocation rate.
- Asynchronous loggers require LMAX Disruptor, a lock-free inter-thread communication library. The mod will load the library onto the system classloader when it is not present. This mod redistributes LMAX Disruptor under the Apache-2.0 License.
- The config file allows easy control of some log4j2 settings.
- System.out and System.err can be redirected to loggers.
Recommended Gear
AffiliateHardware and extras that pair well with this mod.
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