https://pinboard.in/u:jm/public/ recent bookmarks from jm 2016-12-14T11:21:39+00:00 https://eng.uber.com/cherami/ jm a competing-consumer messaging queue that is durable, fault-tolerant, highly available and scalable. We achieve durability and fault-tolerance by replicating messages across storage hosts, and high availability by leveraging the append-only property of messaging queues and choosing eventual consistency as our basic model. Cherami is also scalable, as the design does not have single bottleneck. [...] Cherami is completely written in Go, a language that makes building highly performant and concurrent system software a lot of fun. Additionally, Cherami uses several libraries that Uber has already open sourced: TChannel for RPC and Ringpop for health checking and group membership. Cherami depends on several third-party open source technologies: Cassandra for metadata storage, RocksDB for message storage, and many other third-party Go packages that are available on GitHub. We plan to open source Cherami in the near future. ]]> cherami uber queueing tasks queues architecture scalability go cassandra rocksdb https://pinboard.in/ https://pinboard.in/u:jm/b:08be41dbc892/ 2012-02-02T10:02:02+00:00 http://www.quora.com/Engineering-Management/Why-are-software-development-task-estimations-regularly-off-by-a-factor-of-2-3 jm agile development management programming teams estimation tasks software https://pinboard.in/ https://pinboard.in/u:jm/b:c04b6424baf4/