Pravega.

What is Pravega?

Pravega is an open source distributed storage service implementing Streams. It offers Stream as the main primitive for the foundation of reliable storage systems.

A Stream is an unbounded sequence of bytes (events) that is written to and read from in a strictly sequential order. Streams are durable and elastic, making them ideal for storing events and data that must be reliably and durably ingested and processed in real-time.

Out of the box, Pravega provides:

• strong consistency guarantees for both reads and writes.
• exactly-once semantics for writes.
• transactions.
• stream retention policies:
  • time-based retention.
  • size-based retention.
  • truncation.
  • long-term retention (tiered storage).
• automatic stream scaling policies:
  • Up and down scaling.
  • fixed number of segments.
  • rate of events per second per segment.
  • rate of bytes per second per segment.
• stream metadata management.

Run Pravega cluster

For local developpement

Just download the Pravega distribution and run the following command.

./bin/pravega-standalone

Run Pravega cluster on Docker

ZIO Pravega provides a docker-compose file to run a local Pravega cluster.

export HOST_IP=`ipconfig getifaddr en0`
docker-compose -f docker-compose.yml up

Run Pravega cluster on Kubernetes

TBD

Description