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@@ -4,8 +4,30 @@
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<!-- The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), -->
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<!-- and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). -->
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## [0.11.0](https://github.com/cashubtc/cdk/releases/tag/v0.11.0)
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+### Summary
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+
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+Version 0.11.0 brings significant architectural changes to enhance database reliability and performance. The major changes include:
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+1. **Database Engine Change**: Replaced `sqlx` with `rusqlite` as the SQLite database driver and removed support for `redb`. This change provides better performance and reliability for database operations.
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+2. **Transaction Management**: Introduced robust database transaction support that encapsulates all database changes. The new Transaction trait implements a rollback operation on Drop unless explicitly committed, ensuring data integrity.
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+3. **Race Condition Prevention**: Added READ-and-lock operations to securely read and lock records from the database for exclusive access, preventing race conditions in concurrent operations.
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+### ⚠️ Important Migration Note for redb Users
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+If you are currently running a mint with redb, you must migrate to SQLite before upgrading to v0.11. Follow these steps:
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+
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+1. Stop your current mint
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+2. Back up your database
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+3. Use the migration script available at: https://github.com/cashubtc/cdk/blob/main/misc/convert_redb_to_sqlite.sh
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+4. Update your config file to target the SQLite database engine
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+5. Start your mint with v0.11
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### Added
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- cdk-lnbits: Support lnbits v1 and pre-v1 [PR](https://github.com/cashubtc/cdk/pull/802) ([thesimplekid]).
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- Support for Keyset v2 [PR](https://github.com/cashubtc/cdk/pull/702) ([lollerfirst]).
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thesimplekid