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How to migrate redis

Charles William Harris

Apr 10, 2025 pm 06:12 PM

redisdata lost

The purpose of Redis migration is to upgrade versions, expand capacity, optimize topology, and avoid data loss. The migration steps include: preparing the source server, creating the target server, copying data, and switching to the target server. Common migration methods are RDB migration, AOF migration and incremental replication. Best practices include careful planning, choosing the right method, using buffers, closely monitoring and proper cleaning.

How to migrate redis

Redis Migration Guide

1. Why do you need to migrate Redis

Reasons for migrating Redis include:

Upgrade to a new version for performance and feature enhancements
Expand capacity to meet growing data demands
Optimize topology for greater availability and scalability
Avoid data loss or service interruption

2. Migration steps

Redis migration usually involves the following steps:

1. Prepare the source server

Back up data on the source server
Pause writing data to the server

2. Create the target server

Configure Redis instances on the target server
Create the same database as the source server

3. Copy the data

Copy data from the source server to the target server using tools like redis-cli or rdbcopy
Confirm the data integrity on the target server

4. Switch to the target server

Redirecting client application to target server
Monitor the performance and stability of the target server

3. Common migration methods

1. RDB migration

Use the rdbcopy tool to create an RDB snapshot of the source server
Copy the RDB snapshot to the target server
Loading RDB snapshots on the target server

2. AOF migration

Enable AOF persistence on the source server
Copy the AOF file of the source server to the destination server
Playback of AOF files on the target server

3. Incremental copying

Establish a replication relationship between the source and target servers
Incrementally copy newly written data to the target server

4. Best Practices

To ensure smooth Redis migration, it is recommended to follow the following best practices:

Plan the migration carefully and conduct adequate testing
Select the right data copy method
Use extra intermediate servers as buffers
Monitor server status closely during migration
Perform proper cleaning after the migration is completed

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