hanxi opened a new pull request, #3294:
URL: https://github.com/apache/kvrocks/pull/3294
Closes #3291
Implements redis-select-compatible configuration option that enables Redis
SELECT command support by mapping database indices to namespaces. When enabled,
SELECT 0-15 commands are translated to namespace switches, allowing legacy
Redis clients to work seamlessly with Kvrocks.
Key Implementation:
- redis-select-compatible: Enable/disable SELECT command support (default:
no)
- redis-select-db-prefix: Namespace prefix for database mapping (default:
__db)
- redis-select-db-count: Number of logical databases (default: 16, range:
1-10000)
- SELECT <dbid> internally calls SetNamespace({prefix}{dbid}) to switch
context
- Validates namespace conflicts on startup to prevent data corruption
Changes:
- Add three new readonly config options in kvrocks.conf
- Implement SELECT command handler with namespace-based switching
- Add startup validation to check namespace conflicts
- Add comprehensive configuration documentation
This provides native SELECT command support without external proxies,
maintaining compatibility with Redis clients while leveraging Kvrocks'
namespace architecture.
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