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Sequins is a key/value database for serving static batch data.

It's well-suited to making data generated by Hadoop available to processes that need low-latency, reliable access.

It's designed to be:

• Horizontally scalable: replicate a hot dataset over a few nodes, or partition a large one over many.
• Reliable: serve your data without an online dependency on Hadoop or HDFS. Sequins is built to be resilient to multi-node failures.
• Interoperable: load data from HDFS or S3 in Hadoop's SequenceFile format. Tools like Spark or Impala can also be used to generate data.
• Accessible: fetch values with HTTP GET; no client library required.

See the manual to get started.