Citus Data is pleased to announce the general availability of CitusDB 4.0, which is based on the new PostgreSQL 9.4 release. CitusDB is our full featured, turnkey database solution for fully scalable, highly-available PostgreSQL. A licensed solution, CitusDB Enterprise Edition allows you to scale out PostgreSQL across commodity servers and also parallel process queries across the cluster for real-time analytics on big data. Download the Community Edition at citusdata.com/downloads.
This release brings new functionality and performance improvements, including:
· Support for real-time workloads - CitusDB Enterprise Edition now integrates with pg_shard to support real-time workloads. This integration brings together scalable analytics and low-latency writes in one system.
· Integration with PostgreSQL 9.4 to bring features like JSONB, a faster, more efficient data type for storing JSON data; faster and smaller GIN indexes; and many more. See http://www.postgresql.org/docs/9.4/static/release-9-4.html for a full list of new PostgreSQL 9.4 features.
· Re-balancing the cluster for incremental scalability and fault tolerance - Incrementally add nodes, and uniformly distribute data and thus traffic to those nodes. Re-replicate data from failed nodes evenly across all the remaining ones.
· Faster query performance - A new task-assignment policy for better in-memory workload performance. Binary serialization for data copied between nodes, for faster performance on queries fetching a lot of data. Batching task-assignment calls for improved performance with re-partition joins. Fixed a bug which was causing more data than necessary to be copied over the network.
· Improved usability - Modified \STAGE to allow loading data from any node in the cluster, making data-loads much easier, and also allowing for a more uniform data placement. Query throttling in the real-time executor to prevent resource exhaustion when queries touch thousands of shards.
Further information on CitusDB can be found on the Citus Data website at https://www.citusdata.com/citus-products/citusdb-software.
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Terry Erisman
https://www.citusdata.com
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