Couchbase Server 3.0.1 is first maintenance release for Couchbase Server 3.0. This release focuses on getting the system stability bugs fixed for the Windows platform and providing general availability. In addition, this release also includes some critical bug fixes related to metadata corruption.

Couchbase Server 3.0 is our major release which extends our lead as the most performant and scalable NoSQL database for mission critical enterprise applications.

The major new enhancements and features available in Couchbase Server 3.0 include:

• Performance and scale

  Run at planet scale with more data, faster I/O and improved indexing.

  • Tunable memory lets you configure memory to optimize metadata, data caching and eviction strategies, allowing configurations ranging from full in-memory database to large disk-based datasets.
  • Shared thread pool per node delivers high I/O throughput and low latency for data reads, writes and other operations such as database warm-up.
  • Stream-based views based on Database Change Protocol (DCP), a new streaming protocol, reduces latency for view updates, providing faster view consistency and fresher data.

  For more information, see:

  • Database Change Protocol (DCP) concepts.
  • Shared thread pool concepts, Viewing DCP queues via the web console, and DCP stats via the CLI.
  • Tunable memory concepts, Managing metadata in memory via the web console, Setting metadata ejection policy via the CLI, and Setting metadata ejection via the REST API.
  • Stream-based views concepts.
• Ultra-high availability

  Highly available apps with faster and easier data replication across multiple data centers, and advanced disaster recovery options.

  • Stream-based XDCR (cross data center replication) lowers XDCR latency using memory-to-memory replication of data from the source cluster to the destination cluster -- even before it hits disk.
  • Delta-node recovery permits that nodes be quickly added back after they are repaired, so they can catch up incrementally from where they left off.
  • Incremental backup and restore enables administrators to quickly backup only modified data in the database, making backup more efficient for larger datasets.

  For more information, see:

  • Stream-based XDCR concepts.
  • Delta node recovery concepts, Recovering a node via the web console, Recovering nodes via the CLI, and Setting recovery type via the REST API.
  • Incremental backup and restore concepts, Backing up incrementally and Restoring incrementally.
• Improved security

  Secure on-the-wire data access for apps and admins.

  • Encrypted admin access enables HTTPS access for the Couchbase admin console and the REST API.
  • Encrypted data access with SSL encrypts data in-flight between client and server.

  For more information, see:

  • Encrypted administrative access basics.
  • Encrypted data access basics.
• Simplified administration

  Easy cluster management and resource governance.

  • Pause and resume XDCR enables XDCR streams between source and destination clusters to be paused during maintenance windows and resumed later, continuing from where they left off.
  • Graceful failover enables nodes to be safely removed from the cluster after all in-flight ops are completed.
  • Bucket priority enables prioritization of buckets so that additional I/O resources can be assigned to higher priority buckets for faster workload execution.
  • Cluster-wide diagnostics for improved cluster management.

  For more information, see:

  • XDCR pause and resume replication concepts, Pausing XDCR replication via the web console, Pausing XDCR replication streams via the CLI, and Pausing XDCR replication streams via the REST API.
  • Graceful failover concepts, Failing over a node via the web console, Failing over nodes via the CLI, and Setting graceful failover via the REST API.
  • Disk I/O priority concepts, Managing disk I/O priority via the web console, Setting bucket priority via the CLI, and Setting disk I/O priority via the REST API.
  • Cluster-wide diagnostics concepts, Managing diagnostics via the web console, Diagnostics with couchbase-cli via the CLI, and Diagnostics with cbcollect_info via the CLI.
• Developer empowerment

  Building richer and more powerful apps.

  • Fully integrated native JSON means your application can work with high level objects which can automatically be serialized to JSON through the Couchbase APIs.
  • Powerful async and reactive interfaces in Java , and .NET enable building richer apps, with better IO performance.
  • Rich framework integrations with open source frameworks such as Spring, gEvent, twisted and Ottoman.

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