Netty is a godsend. Java threads are extremely memory-hungry, so async I/O is a ... | Hacker News

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sehugg on July 4, 2011 | parent | context | favorite | on: Twitter Shifting More Code to JVM, Citing Performa...

Netty is a godsend. Java threads are extremely memory-hungry, so async I/O is a must for handling many connections. We routinely handle 200K simultaneous connections on our push servers without breaking a sweat.

fictorial on July 5, 2011 [–]

Mind if I ask what the specs are for those servers?

sehugg on July 5, 2011 | [–]

AWS m1.large. We don't use nearly the entire CPU or memory footprint, but m1.small just is a wee too tiny and there's nothing in between.

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