Changes by Version

Release Notes.

0.4.0

Features

• Add TSDB concept document.
• [UI] Add YAML editor for inputting query criteria.
• Refactor TopN to support NULL group while keeping seriesID from the source measure.
• Add a sharded buffer to TSDB to replace Badger's memtable. Badger KV only provides SST.
• Add a meter system to control the internal metrics.
• Add multiple metrics for measuring the storage subsystem.
• Refactor callback of TopNAggregation schema event to avoid deadlock and reload issue.
• Fix max ModRevision computation with inclusion of TopNAggregation
• Enhance meter performance
• Reduce logger creation frequency

Bugs

• Fix iterator leaks and ensure proper closure and introduce a closer to guarantee all iterators are closed
• Fix resource corrupts caused by update indexRule operation

Chores

• Bump go to 1.20.
• Set KV's minimum memtable size to 8MB
• [docs] Fix docs crud examples error
• Modified TestGoVersion to check for CPU architecture and Go Version

0.3.1

Bugs

• Fix the broken of schema chain.
• Add a timeout to all go leaking checkers.

Chores

• Bump golang.org/x/net from 0.2.0 to 0.7.0.

0.3.0

Features

• Support 64-bit float type.
• Web Application.
• Close components in tsdb gracefully.
• Add TLS for the HTTP server.
• Use the table builder to compress data.

Bugs

• Open blocks concurrently.
• Sync index writing and shard closing.
• TimestampRange query throws an exception if no data in this time range.

Chores

• Fixes issues related to leaked goroutines.
• Add validations to APIs.

For more details by referring to milestone 0.3.0

0.2.0

Features

• Command line tool: bydbctl.
• Retention controller.
• Full-text searching.
• TopN aggregation.
• Add RESTFul style APIs based on gRPC gateway.
• Add “exists” endpoints to the schema registry.
• Support tag-based CRUD of the property.
• Support index-only tags.
• Support logical operator(and & or) for the query.

Bugs

• “metadata” syncing pipeline complains about an “unknown group”.
• “having” semantic inconsistency.
• “tsdb” leaked goroutines.

Chores

• “tsdb” structure optimization.
  • Merge the primary index into the LSM-based index
  • Remove term metadata.
• Memory parameters optimization.
• Bump go to 1.19.

For more details by referring to milestone 0.2.0

0.1.0

Features

• BanyanD is the server of BanyanDB
  • TSDB module. It provides the primary time series database with a key-value data module.
  • Stream module. It implements the stream data model's writing.
  • Measure module. It implements the measure data model's writing.
  • Metadata module. It implements resource registering and property CRUD.
  • Query module. It handles the querying requests of stream and measure.
  • Liaison module. It's the gateway to other modules and provides access endpoints to clients.
• gRPC based APIs
• Document
  • API reference
  • Installation instrument
  • Basic concepts
• Testing
  • UT
  • E2E with Java Client and OAP