Most existing gems that address command execution provide a limited interface or lack notable features. In contast, Exek seeks to provide comprehensive support for all of a program's exec needs with one thoughtfully-designed library. Intended features: - A "Command" class that encapsulates argv, env, and IO options, and process state. - Easy-to-use high level interfaces with sensible defaults for running commands to completion. - Comprehensive support for low-level concerns like piping, PTYs, and file descriptor magic. - Utilities for manipulating `sh` script strings, idiomatically building argument arrays, and generating reusable interaces for common system commands. - Tracing and introspection facilities for logging and latency analysis. - Safety: does not monkeypatch external modules, encourage mixins or use eval. Attempts to guide developers away from unsafe practices like shell scripts and shell injection.
PostgreSQL backed active job adapter which uses `LISTEN/NOTIFY` to listen for jobs and `FOR UPDATE SKIP LOCKED` to reserve jobs.