kotlin-leveldb
1.0.2indexedEnables fast key-value storage using LevelDB, offering operations like put, get, and delete. Supports multiple platforms with performance benchmarks across various systems.
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Enables fast key-value storage using LevelDB, offering operations like put, get, and delete. Supports multiple platforms with performance benchmarks across various systems.
Wrapper for using LevelDB in Kotlin Multiplatform projects and created and designed for use in lamba92/kotlin.document.store.
From google/leveldb repository:
LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.
google/leveldb is licensed under BSD-3-Clause license, all rights reserved to the original authors.
The library is available for:
No JS or WASM, sorry!
LevelDB binaries are built in lamba92/leveldb-builds repository.
See releases for the latest version!
In your build.gradle.kts file:
// Kotlin Multiplatform
kotlin {
sourceSets {
commonMain {
dependencies {
implementation("com.github.lamba92:kotlin-leveldb:{latest-version}")
}
}
}
}
// Kotlin JVM
dependencies {
implementation("com.github.lamba92:kotlin-leveldb:{latest-version}")
}
val db = LevelDB("/path/to/db/as/string")
db.put("key", "value")
val value = db.get("key")
db.delete("key")
db.close()
Snapshots of latest commits are available in Sonatype's snapshots repository. Can be used by adding the repository and the dependency:
repositories {
maven("https://oss.sonatype.org/content/repositories/snapshots/")
}
Use version x.y-SNAPSHOT to get the latest version. Check the current one here.
Benchmarks are available in the benchmarks module. On each commit, the benchmarks are run and the results are published in the GitHub Actions logs. You can find the latest results here. Benchmarks are executed on fre GitHub Actions runners for Windows x64, macOS arm64 and Linux x64, specs available here. Benchmarks uses Kotlin/Native only, so the JVM version is not tested.
As of December 2024:
| Operation | Ops/sec (avg over 10 runs) |
|---|---|
| Burst Single Put |
Quite good, I'd say!
| 262.85k |
| Burst Single Get | 735.99k |
| Burst Single Override Put | 257.76k |
| Burst Single Delete | 287.94k |
| Batch Put | 1116.69k |
| Operation | Ops/sec (avg over 10 runs) |
|---|
| Burst Single Put | 315.42k |
| Burst Single Get | 522.96k |
| Burst Single Override Put | 302.40k |
| Burst Single Delete | 358.45k |
| Batch Put | 936.79k |
| Batch Override Put | 918.24k |
| Batch Delete | 1266.11k |
| Operation | Ops/sec (avg over 10 runs) |
|---|
| Burst Single Put | 290.51k |
| Burst Single Get | 689.45k |
| Burst Single Override Put | 283.43k |
| Burst Single Delete | 349.12k |
| Batch Put | 1392.60k |
| Batch Override Put | 1374.63k |
| Batch Delete | 1919.41k |
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