MigrateRedis to Valkey
Migrate Redis to Valkey, ElastiCache to Valkey, or Valkey to Valkey across clouds - with pre-migration analysis, live replication, and post-migration validation.
1. Analyze
Know whether the migration is safe before you move a single key.
2. Migrate
Snapshot or continuous replication. Writes continue during sync.
3. Validate
Verify the target matches the source after cutover.
Pre-migration analysis
A readiness report that tells you what will happen before you start.
Data-type and memory breakdown
Key counts by type (string, hash, list, set, sorted set, stream), memory distribution, and total dataset size. Know what you are moving and how much space the target needs.
TTL distribution
Breakdown of keys by remaining TTL, including keys expiring within the next hour. Helps you decide whether to migrate volatile data or let it expire before cutover.
COMMANDLOG behavioral analysis
Scans command history for engine-specific commands that may behave differently on the target. Surfaces usage patterns that could break after migration.
HFE detection
Detects Hash Field Expiry usage on the source instance and flags it in the report. Per-field TTLs are not preserved in command mode, so the report warns you when HFE is present so you can plan accordingly.
The report ends with a safety verdict recommending the migration mode (snapshot or continuous replication) based on what the analysis found.
Live migration with continuous replication
Snapshot, continuous sync, or cross-engine command replay - with writes continuing on the source during replication.
Snapshot (RDB) mode
Full dataset transfer via RDB dump. Suitable when you can accept a brief window where the target may lag behind the source.
Continuous replication (PSYNC)
Initial snapshot followed by ongoing replication of writes. The source stays live during sync. Cut over when the replication lag is acceptably low, and roll back if needed.
Command mode (cross-engine)
In-process replay of keys and values over plain commands - no dump-format compatibility required between source and target. The mode that works when engines disagree; the readiness report flags what it can't preserve (like per-field hash TTLs) before you commit.
Topology support
Standalone, Sentinel, and Cluster topologies on both source and target.
Older engines and forks
Redis versions before 7 and KeyDB are supported as sources - BetterDB probes INFO section-by-section so older engines that predate modern INFO behavior still analyze and migrate cleanly.
Cutover and rollback
When replication is caught up, cut traffic to the target. If something is wrong, roll back to the source while it is still live.
Post-migration validation
Verify the target matches the source after cutover.
Key-name comparison
Compares key names between source and target to surface missing or extra keys. Confirms the dataset transferred completely.
Health verification in Monitor
After cutover, BetterDB Monitor tracks the target instance the same way it tracked the source - slowlog, latency, memory, and client metrics - so you can confirm the new instance is healthy under production load.
Why not RIOT?
RIOT (Redis Input/Output Tools) was the standard open-source migration path for years. It was archived and replaced by RIOT-X, which is closed-source, enterprise-only, and has no Valkey support. BetterDB Monitor is the open-source alternative - browser-based, no binary to install, no license key.
In March 2024 Redis Ltd. changed the Redis license from BSD to a dual SSPL/RSAL model, which is why teams are evaluating Valkey - the BSD-3-Clause fork maintained by the Linux Foundation.