Sync Without the Stack.
Build real-time sync into your product—without stitching together multiple disjointed tools.
The five workarounds every Sync team builds
Teams building sync engines on traditional databases end up reinventing the same infrastructure. Each workaround adds complexity, fragility, and months to the roadmap.
Bolted-On Change Detection
External Event Distribution
History Reconstruction
DIY Ordering & Conflict Resolution
Subscription Management
The Sync complexity tax
6-12 months of plumbing
3-5 systems to operate
Fragile glue code
No replay or audit trail
Topology lock-in
Rising infrastructure cost
One database. Everything Sync needs.
KurrentDB eliminates all five workarounds with a single event-native database. Changes are captured as immutable events with built-in streaming, ordering, history, and subscriptions—so your team focuses on sync logic, not infrastructure.
Native Change Streams
Every write to KurrentDB is immediately available as a real-time stream. No triggers, no CDC, no polling. Clients subscribe to the changes they care about.
No more CDC pipelines
No more database triggers
No more polling loops
Full Event History
Events are stored immutably with unlimited retention. Replay from any point in time, rebuild state, debug production issues, or onboard new clients from the event log.
No more shadow tables
No more log parsing
No more DIY event stores
Guaranteed Global Ordering
Every event gets a deterministic position in the stream. Native optimistic concurrency control resolves conflicts without application-level locking or version vectors.
No more custom sequence counters
No more vector clocks
No more merge logic
Built-In Subscriptions
Persistent, catch-up, and filtered subscriptions out of the box. Clients reconnect and resume from their last known position—no custom pub/sub layer needed.
No more message brokers
No more WebSocket routing
Flexible Stream Topologies
Organize data into streams per-user, per-workspace, per-entity—and change the topology at runtime. Projections and connectors transform data without touching the source.
No more topology lock-in
No more schema migrations
No more downtime for refactoring
Semantic Events
Events capture why something changed, not just what changed. "UserMovedTask" contains intent that CDC row mutations can never express.
No more CDC row diffs
No more opaque mutation logs
Write events, not rows
Every state change is captured as a named, immutable event — like "OrderPlaced" or "ItemShipped". Events carry business meaning, not just data diffs.
Streams organize everything
Events are grouped into fine-grained streams by entity — one stream per customer, order, or device. No duplication, guaranteed ordering, and scalable to billions of streams.
Subscribe and react in real time
Clients subscribe to the streams they care about and receive updates the moment they're written. Catch-up subscriptions replay history from any point for consistency.
Why teams choose Kurrent for Sync
Replace 5 tools with 1
Stop stitching together Redis, Kafka, CDC pipelines, audit logs, and cache invalidation. KurrentDB handles storage, streaming, and history natively.
Evolve safely
Change your Sync topology—per-user, per-workspace, per-team—without downtime. One-way door decisions become two-way doors.
Sleep at night
Full event history, deterministic replay, and immutable audit trails. Know exactly what happened, when, and why—across every client.
Deploy Your Way
Choose the deployment model that fits your needs
Kurrent Cloud
Focus on your application while we manage the infrastructure.
Kurrent Enterprise
Run and manage KurrentDB yourself with full control and support.
