KeyDB
KeyDB is a multithreaded Redis-compatible database for caching, data structures, and background-job infrastructure.
KeyDB is a high-performance, multithreaded fork of Redis that delivers dramatically higher throughput per node.
Key Features:
- Redis Compatible - Drop-in replacement for Redis with full command and protocol compatibility.
- Active Replication - Enable active-active replication across nodes for high availability.
- Flash Storage - Extend memory capacity with SSD-backed storage for larger datasets.
- MVCC Architecture - Handle concurrent reads and writes without lock contention.
Whether you're caching scraped results at high volume, managing job queues for distributed crawlers, or building real-time data pipelines, KeyDB provides Redis compatibility with multithreaded processing.
Web scraping workflow
How to use KeyDB in a web scraping pipeline
KeyDB implements Redis-compatible data structures and protocol access. It can support a scraper's shared cache or coordination state when the application deliberately chooses and tests that compatibility surface.
A practical workflow
- A crawler derives a normalized key for a URL and extraction version before fetching it.
- Your application uses KeyDB to look up cached state or record a bounded deduplication marker, with an explicit expiry policy.
- Workers save authoritative records in durable storage and update the shared state so subsequent work can reuse or refresh them.
When it fits
Consider it when an existing application expects Redis-style operations and needs a separately operated coordination or caching layer. Define which state can be rebuilt from source records and which state must survive a process restart.
Boundaries
KeyDB does not collect pages or make a multi-step workflow atomic by itself. Verify the commands and client behavior your application uses rather than assuming every newer Redis feature is supported. Configure memory, persistence and eviction intentionally; lost cache entries must not silently become lost dataset records.
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Our productRepository
Snapchat/KeyDB
Stars
12.5KForks
679Last commit
2024-04-04License
BSD-3-ClauseLanguage
C++
Metrics recorded 2026-10-16
Repository details
Last push: 2024-05-29
License source: Repository license file
Sources
Verified against the Snapchat/KeyDB repository and the PyPI package.