sqlx4k — first stable release of a high-performanc...
# feedy
Yorgos S.
09/22/2025, 12:12 PMsqlx4k — first stable release of a high-performance, non-blocking DB driver for Kotlin Multiplatform
Hey Kotlin folks! I’m excited to share the first stable release of sqlx4k — a high-performance, non-blocking database driver for Kotlin Multiplatform.
What it is:
• A Kotlin-first, async driver for PostgreSQL, MySQL, and SQLite
• Works across JVM and native targets (macOS, Linux, Windows, iOS, Android NDK)
• Built for coroutines and modern, scalable apps
You can check it out here: https://github.com/smyrgeorge/sqlx4k
Highlights:
• Async I/O with connection pooling
• Prepared statements (named and positional)
• Row mappers
• Transactions + coroutine-friendly TransactionContext
• Code generation (CRUD and @Repository with KSP)
• Database migrations
• PostgreSQL LISTEN/NOTIFY
• SQLDelight integration
Supported targets:
• JVM (PostgreSQL and MySQL on JVM today)
• iosArm64, androidNativeX64/Arm64, macosArm64/X64, linuxArm64/X64, mingwX64
• wasmWasi is being explored
Get it from Maven Central:
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// PostgreSQL
implementation("io.github.smyrgeorge:sqlx4k-postgres:x.y.z")
// MySQL
implementation("io.github.smyrgeorge:sqlx4k-mysql:x.y.z")
// SQLite
implementation("io.github.smyrgeorge:sqlx4k-sqlite:x.y.z")❤️ 3
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PHondogo
09/22/2025, 2:30 PMHello, @Yorgos S.!
Nice lib! Thanks!
Just noticed when creating database client seems like redundant database vendor in url.
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val db = PostgreSQL(
url = "<postgresql://localhost:15432/test>", // may be omit 'postgresql:' we already creating PostgreSQL client
username = "postgres",
password = "postgres",
options = options
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Yorgos S.
09/22/2025, 2:47 PMHello @PHondogo probably you’re right.
Maybe we can omit the database vendor in the future.
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Arjan van Wieringen
09/22/2025, 2:51 PMHahaha, this is amazing. I have been working as a side project on a pure Kotlin coroutine based Postgres client. Drawing inspiration from SqlX 😄.
Yours looks infinitely better though. So I'll just keep mine a hobby then.
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Yorgos S.
09/22/2025, 2:54 PMTo be honest I’m planning also in the future to start working on a pure kotlin pg client. When I started this project it was my only option (I was developing an app in kotlin native).
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Arjan van Wieringen
09/22/2025, 3:01 PMI see now that you wrap sqlx in rust right?
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Yorgos S.
09/22/2025, 3:02 PMyes
Yorgos S.
09/22/2025, 3:02 PMYorgos S.
09/22/2025, 3:03 PMThe idea is having something that is working and slowly replace the underlying clients.
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Arjan van Wieringen
09/22/2025, 4:02 PMNice. I implemented the postgres wire protocol as an educational exercise.
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Yorgos S.
09/22/2025, 4:11 PMNice
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darkmoon_uk
09/23/2025, 1:11 AMPostgreSQL LISTEN/NOTIFY🙂 1
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