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feat: Add option to control WAL compression

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Also enables zstd compression by default
This commit is contained in:
Jade Ellis 2025-10-26 17:30:42 +00:00
parent cff3c27729
commit 05886f8dcb
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GPG key ID: 8705A2A3EBF77BD2
3 changed files with 52 additions and 2 deletions
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19
src/core/config/mod.rs
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@ -1128,6 +1128,23 @@ pub struct Config {
#[serde(default = "true_fn")]
pub rocksdb_bottommost_compression: bool,
/// Compression algorithm for RocksDB's Write-Ahead-Log (WAL).
///
/// At present, only ZSTD compression is supported by RocksDB for WAL
/// compression. Enabling this can reduce WAL size at the expense of some
/// CPU usage during writes.
///
/// The options are:
/// - "none" = No compression
/// - "zstd" = ZSTD compression
///
/// For more information on WAL compression, see:
/// https://github.com/facebook/rocksdb/wiki/WAL-Compression
///
/// default: "zstd"
#[serde(default = "default_rocksdb_wal_compression")]
pub rocksdb_wal_compression: String,
/// Database recovery mode (for RocksDB WAL corruption).
///
/// Use this option when the server reports corruption and refuses to start.
@ -2454,6 +2471,8 @@ fn default_rocksdb_compression_algo() -> String {
.to_owned()
}
fn default_rocksdb_wal_compression() -> String { "zstd".to_owned() }
/// Default RocksDB compression level is 32767, which is internally read by
/// RocksDB as the default magic number and translated to the library's default
/// compression level as they all differ. See their `kDefaultCompressionLevel`.