Engineered for Speed.
Built for
Production.
FlashKey is a multi-threaded in-memory data store written in C11. Full Redis compatibility, native encryption at rest, and active replication — delivering 22-34% faster throughput out of the box.
What is FlashKey?
In-Memory Data, Reimagined
FlashKey is a high-performance in-memory data store designed as a complete replacement for Redis and Valkey. Built with native multi-threading in C11, it delivers faster throughput while adding enterprise capabilities that Redis lacks — including encryption at rest, active-active replication, and MVCC-based persistence that never blocks your reads or writes.
- Native multi-threading — true parallel command execution, not the single-threaded bottleneck of Redis
- AES-256-CTR encryption at rest with per-key initialization vectors, built in from day one
- Active-active replication with automatic failover and conflict resolution
- MVCC snapshots for non-blocking persistence — save to disk without pausing client operations
- 442 Redis commands with full RESP2/RESP3 protocol support and all major data structures
- Cluster mode with hash slot distribution and sentinel-compatible high availability
Everything You Need. Nothing You Don't.
Enterprise-grade capabilities built into a single, efficient binary
Multi-Threading
Linear scaling across CPU cores. Every thread processes commands in parallel, eliminating the single-threaded bottleneck that limits Redis throughput.
Encryption at Rest
AES-256-CTR with per-key initialization vectors. Meet compliance requirements without bolting on external encryption tools or proxy layers.
Active Replication
Active-active replication with automatic failover and conflict resolution. Zero-downtime deployments become the standard, not the exception.
MVCC Snapshots
Persist data to disk without blocking client operations. Multi-version concurrency control ensures your application never waits for background saves.
Command Coverage
442 Redis commands across all major data structures. RESP2 and RESP3 protocol support means your existing client libraries work without modification.
Cluster Support
Hash slot distribution with sentinel-compatible high availability. Scale horizontally across nodes while maintaining full Redis cluster semantics.
Switch in Minutes, Not Months
FlashKey speaks the same protocol, accepts the same commands, and works with the same client libraries as Redis. Change your connection endpoint and your application is running on FlashKey — no code changes, no data migration scripts, no retraining.
- Full RESP2/RESP3 protocol compatibility — every Redis client works out of the box
- 442 commands including Pub/Sub, Streams, Lua scripting, and transactions
- Same port, same authentication, same TLS configuration
- Existing monitoring and alerting tools continue to work unchanged
Ready to Accelerate Your Data Layer?
Schedule a technical demo with our team. We'll walk through your current Redis deployment, demonstrate the migration process, and show you the performance gains you can expect in your specific environment.