The Twitter Engineering Blog

Information from Twitter's engineering team about our technology, tools and events.

Results from Engineering for: September 2015

Hadoop filesystem at Twitter

Details about our HDFS deployments: HA, Federation, and ViewFs.

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Building DistributedLog: Twitter’s high-performance replicated log service

DistributedLog, a high-performance replicated log service, provides high-level features over Apache BookKeeper such as naming, data segmentation and retention policies, efficient fan-in and fan-out, and geo-replication.

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Improving communication across distributed teams

A detailed look at our past and present cross-office meeting tools.

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Diffy: Testing services without writing tests

Diffy is an open-source tool that automatically detects potential bugs in HTTP-based services.

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