kestel - 分布式消息队列系统

jopen 12年前

kestel是一个简单，分布式消息队列系统。

特性：

fast

It runs on the JVM so it can take advantage of the hard work people have put into java performance.
small

Currently about 2500 lines of scala, because it relies on Netty (a rough equivalent of Danger's ziggurat or Ruby's EventMachine) -- and because Scala is extremely expressive.
durable

Queues are stored in memory for speed, but logged into a journal on disk so that servers can be shutdown or moved without losing any data.
reliable

A client can ask to "tentatively" fetch an item from a queue, and if that client disconnects from kestrel before confirming ownership of the item, the item is handed to another client. In this way, crashing clients don't cause lost messages.