timescale/timescaledb
Timescaledb
TimescaleDB is an open-source PostgreSQL extension that adds native time-series capabilities to the database. At its core, it transforms standard PostgreSQL tables into hypertables—automatically partitioned by time intervals—so data is stored in fixed-size chunks without manual sharding. The extension includes a library of over 200 built-in SQL functions purpose-built for time-series workloads, such as time bucketing, gap filling, percentile estimation, and time-weighted averages.
What distinguishes TimescaleDB from generic PostgreSQL is its set of integrated time-series features that work through ordinary SQL. Continuous aggregate materialized views incrementally refresh precomputed summaries as new data arrives, keeping dashboards fast without full rescans. A multi-tier storage architecture automatically moves older, less frequently accessed data from SSD to low-cost object storage while keeping it fully queryable through the same SQL interface. Columnar compression reduces storage footprint, and a background job scheduler handles compaction, retention, and tiering policies without blocking write or read traffic.
Beyond core time-series storage and analytics, TimescaleDB supports mixed workloads. It offers multi-modal search that combines BM25 full-text ranking, vector embedding similarity, and relational filters in a single SQL query against time-series data. The extension also provides read replica scaling to offload queries, connection pooling for high concurrency, and chunk-level query skipping that eliminates irrelevant data partitions during scans. The entire feature set is accessed as a PostgreSQL extension, meaning all standard PostgreSQL tooling, drivers, and ecosystem compatibility remain intact.
Features
- Automatic Time Partitioning - Automatically splits incoming time-series data into time-based chunks for efficient storage and querying.
- Time-Series Extensions - Transforms standard PostgreSQL tables into hypertables for time-series workloads with automated partitioning and compression.
- Hypertable Partitioning - Provides automatic time-interval chunking that partitions incoming data into fixed-size slices for linear scale-out.
- Columnar Time-Series Compressions - Compresses time-series data by converting row-oriented data to a columnar format with type-specific compression.
- Hybrid Compression Tiering - Reduces storage footprint through a combination of hybrid row-columnar compression and automatic data tiering.
- Automated Lifecycle Policies - Schedules background policies for retention, compression, and tiering to maintain time-series performance and control storage costs.
- Continuous Aggregate Definitions - Creates materialized views that pre-aggregate and incrementally refresh time-series data for instant dashboard queries.
- Incremental View Refreshes - Provides incremental continuous aggregates that refresh materialized views by processing only new or changed data.
- Partitioning by Time or Key - Splits large tables into smaller partitions based on time or a key to improve query performance.
- Cold Data Tiering - Moves cold data to object storage by policy while keeping it fully queryable through the same SQL interface.
- Cross-Tier Querying - Runs standard SQL queries that transparently access data spread across both high-performance and object storage tiers.
- Time-Series Aggregations - Executes common time-series operations like time bucketing and gap filling using specialized SQL functions.
- Advanced - Ships over 200 built-in SQL functions for percentiles, gap-filling, and time-weighted averages out of the box.
- Time Bucketing - Provides built-in time bucketing functions that slice data into fixed intervals for fast grouped queries.
- Time-Series Insertions - Inserts rows into time-series tables using standard SQL INSERT with automatic time-interval partitioning.
- Time-Series Table Creations - Creates time-series tables that automatically partition data by time and convert to columnar storage.
- Time-Series SQL Querying - Ships over 200 built-in SQL functions for time bucketing, gap filling, percentile estimation, and time-weighted averages.
- Time-Series SQL Functions - Provides a library of over 200 SQL functions for time bucketing, gap-filling, percentile estimation, and time-weighted averages.
- Background Job Schedulers - Ships a dedicated background job scheduler for running compression, retention, and materialized view refresh policies.
- Hybrid Storage Formats - Stores data in a hybrid row-columnar format with row storage for fast writes and columnar storage for analytical queries.
- Chunk Skipping Optimizations - Implements chunk-level data skipping that filters out irrelevant partitions during query execution.
- Compressed Data Modifications - Allows immediate updates and deletes on compressed time-series data by staging changes in a row-oriented buffer.
- Data Retention Policies - Automates data lifecycle management with retention policies to keep critical data while archiving old records.
- Chunk and Batch Pruning Optimizers - Eliminates irrelevant storage chunks and columnar batches through partition pruning, metadata, indexes, and vectorized parallel processing.
- Automatic Chunk Reorderers - Schedules background tasks to physically reorder chunks by an index, improving query performance on range scans.
- Time-Series Multi-Modal Searches - Combines BM25 full-text search, vector similarity search, and relational filters in a single SQL query against time-series data.
- Tablespace Bindings - Attaches or detaches tablespaces to distribute data chunks across different storage locations for performance or capacity.
- Read Replicas - Offloads read queries to read replica sets to protect write performance and handle high read traffic.
- BM25 Full-Text Indices - Searches text using BM25 ranking with combined full-text and relational queries in SQL.
- Manual Chunk Operations - Provides functions for manually creating, dropping, merging, splitting, and moving individual data chunks.
- Table Conversion to Time-Series Partitioning - Converts standard PostgreSQL tables into time-series tables with automatic time-based partitioning and columnar storage.
- Time-Series Deletions - Supports deleting rows from time-series tables using standard SQL DELETE with optional time-range scoping.
- Time-Series Updates - Updates existing rows in time-series tables using standard SQL UPDATE while preserving the partition structure.
- Vector Embedding Indexes - Stores and queries vector embeddings using vector search, enabling semantic search alongside time-series data.
- Chunk Skipping Optimizers - Skips chunks that do not match query criteria, reducing scan time and resource usage.
- Data Storage Systems - Optimizes time-series data storage in PostgreSQL.
- Database Systems - PostgreSQL extension optimized for time-series data.
- Time Series Databases - Time series storage built on top of PostgreSQL.
