A pure OCaml PostgreSQL client library with support for Async, LWT, and synchronous operations.
PGX is a pure OCaml PostgreSQL client library that provides a safe and correct interface for database operations. It supports multiple concurrency models including Async, LWT, and synchronous operations, making it versatile for different OCaml applications. The library focuses on preventing common errors like executing unprepared statements and ensures proper handling of concurrent queries.
OCaml developers building applications that require reliable PostgreSQL connectivity, especially those using Async or LWT for concurrency or deploying on Mirage OS.
Developers choose PGX for its emphasis on correctness and safety, built-in support for popular OCaml concurrency libraries, and its pure OCaml implementation which avoids external dependencies. Its high-level interfaces simplify database interactions while maintaining robustness.
A pure OCaml PostgreSQL client library
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Makes it nearly impossible to execute unprepared statements and properly handles concurrent queries, preventing common database errors as highlighted in the README.
Uses Pgx.Value with built-in converters to avoid string-based manipulations, enhancing type safety and reducing errors in OCaml code.
Provides native integration with OCaml's Async and LWT libraries, eliminating the need for custom IO implementations, as stated in the features.
Supports unikernel deployments via Pgx_lwt_mirage, making it suitable for secure and lightweight application hosting in specialized environments.
Admits no performance benefit from concurrent queries as they are not sent in parallel, which can bottleneck data-intensive applications, per the README.
Tied strictly to OCaml, limiting use in polyglot projects and requiring familiarity with OCaml's toolchain and concurrency models.
Requires choosing between packages like pgx_async or pgx_lwt_unix based on concurrency needs, adding initial configuration overhead.