Release 0.51.0

rust-rocksdb 0.50.0 -> 0.51.0

rust-librocksdb-sys remains 0.47.0+11.1.2, published for this release.

Highlights of this release (full notes in CHANGELOG.md):

- librocksdb-sys: bundled RocksDB upgraded to 11.1.2.

- rust-rocksdb: new CompactOptions blob GC age-cutoff API.

- rust-rocksdb: EventListener recovery-end callback now exposes old/new background error statuses and severities.

- rust-rocksdb: upstream compatibility additions for SstFileWriter delete_range, mempurge threshold, TransactionDB checkpoint log-size, and safe raw-iterator timestamp.

- librocksdb-sys: rustflags-based target-cpu parsing and zstd feature cleanup.

Author: zaidoon1

CHANGELOG.md

@@ -1,25 +1,38 @@
 # Changelog
 
-## Unreleased
+## 0.51.0 (2026-06-26)
 
 - fix(librocksdb-sys): upgrade the bundled RocksDB submodule to
   11.1.2. (zaidoon1)
+- feat: add `CompactOptions::set_blob_garbage_collection_age_cutoff`,
+  exposing the matching RocksDB option through the safe Rust API.
+  (kmorkos)
+- feat: expose RocksDB's non-deprecated error recovery end callback
+  through `EventListener::on_error_recovery_end`. The callback receives
+  `BackgroundErrorRecoveryInfo`, including old/new background error
+  statuses and severities. (zaidoon1)
+- fix: make raw pointer casts clippy-clean on Linux aarch64. No
+  behavior change is intended. (evanj)
+- fix(librocksdb-sys): parse `CARGO_ENCODED_RUSTFLAGS` with the
+  `rustflags` crate so both `-Ctarget-cpu=...` and
+  `-C target-cpu=...` forms are handled correctly. (evanj)
 - feat: add `SstFileWriter::delete_range` and expose
   `Options::set_experimental_mempurge_threshold`, matching upstream
-  rust-rocksdb APIs. (cooronx, Vladimir Petrzhikovskii)
+  rust-rocksdb APIs. (cooronx, 0xdeafbeef)
 - feat: add `TransactionDBCheckpoint::create_checkpoint_with_log_size`
   for upstream source compatibility. TransactionDB checkpoints may
-  still flush memtables regardless of the threshold. (gdorsi, zaidoon1)
+  still flush memtables regardless of the threshold. (calavera, gdorsi,
+  zaidoon1)
 - fix: make `DBRawIteratorWithThreadMode::timestamp()` safe and
   upstream-compatible by returning `Option<&[u8]>`; the prior zero-copy
-  unchecked behavior is available as `timestamp_unchecked()`. (ali2992,
-  zaidoon1)
+  unchecked behavior is available as `timestamp_unchecked()`.
+  (dillonhicks, ali2992, zaidoon1)
 - fix: derive multi-get key pointers and lengths from a single
   `AsRef<[u8]>` call per key across DB, Transaction, and TransactionDB
-  paths. (Niklas Fiekas)
+  paths. (niklasf)
 - fix(librocksdb-sys): disable `zstd-sys` default features while
   preserving local `experimental` support, avoiding an unnecessary
-  transitive bindgen path. (Congyu WANG, zaidoon1)
+  transitive bindgen path. (Congyuwang, zaidoon1)
 
 ## 0.50.0 (2026-05-23)
 

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "rust-rocksdb"
 description = "Rust wrapper for Facebook's RocksDB embeddable database"
-version = "0.50.0"
+version = "0.51.0"
 edition = "2024"
 rust-version = "1.91.0"
 authors = [