Implements an optimized algorithm for predicting future cron executions from schedule arrays. Uses precomputed sets and sorted arrays to efficiently compute next run times without iterating over all minutes. Includes a performance benchmark and fuzz test. This is a self-contained utility that could be extracted as a standalone library for cron schedule prediction.

PHP counterpart of the frontend ExecutionPredictor. Provides the same optimized schedule prediction logic for server-side use. Demonstrates clean separation of concerns and is decoupled from the rest of the API. Could be reused in any PHP project needing cron schedule prediction.

Parses curl, wget, and crontab command lines into structured job fields. Handles a wide range of flags and edge cases, with comprehensive test coverage. Self-contained utility that can be reused in any project requiring command-line parsing for HTTP request configuration.

Interactive React component for editing cron schedules. Supports preset patterns (every N minutes, daily, hourly, etc.) and custom multi-select with live preview of next executions. Decoupled from the rest of the app, it can be reused as a standalone schedule editor component.

Generic, reusable table component with pagination, multi-select, drag-and-drop row reordering, and action menus. Built with Material-UI and styled for flexibility. Demonstrates clean component design and could be extracted into a separate UI library.

Redis-backed rate limiter with support for per-user and per-method limits. Provides a clean interface for checking and incrementing counters. Self-contained and could be reused in any PHP application requiring rate limiting.

Core HTTP request execution engine using libcurl multi-handle with async DNS resolution (c-ares) and libev event loop. Extracts SSL certificate expiry, handles custom headers/body, and supports timeout and response size limits. Demonstrates advanced C++ and network programming patterns. Could be extracted as a reusable async HTTP library.