Tag: async
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Most referenced — #async
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async / await in JavaScript ES2017
async functions always return a Promise; await pauses execution inside an async function until a Promise settles — giving asynchronous code the readability of synchronous code without blocking the event loop.
1mo ago
javascript intermediate
PHP Fibers — Internals & Scheduler Patterns PHP 8.1+ How PHP Fibers work under the hood — stack allocation, suspension mechanics, and how to build a cooperative multitasking scheduler on top of the Fiber API introduced in PHP 8.1.
2mo ago
php advanced
Concurrency vs Parallelism
Concurrency is about dealing with multiple tasks at once (structuring); parallelism is actually executing multiple tasks simultaneously (hardware). You can have one without the other.
2mo ago
concurrency beginner
Event-Driven Concurrency
Event-driven concurrency uses a single-threaded event loop to handle many concurrent I/O operations — no threads, no locks, but requires non-blocking code throughout.
2mo ago
concurrency intermediate
Fibers — Cooperative Concurrency (PHP 8.1) PHP 8.1+
PHP 8.1 Fibers enable cooperative multitasking — suspending execution at yield points and resuming later — the foundation for async PHP frameworks without OS threads.
2mo ago
php advanced
Message Broker
A message broker is middleware that receives, routes, and delivers messages between producers and consumers — decoupling services and enabling async communication at scale.
2mo ago
messaging intermediate
Message Queue
A durable buffer that decouples the component producing work (producer) from the component processing it (consumer), enabling async processing, load levelling, and retry logic without direct coupling.
2mo ago
messaging intermediate
Producer-Consumer Pattern
Producer-Consumer decouples work generation from processing — producers add to a queue, consumers process independently, buffering load spikes and enabling parallel throughput.
2mo ago
concurrency intermediate
Promise.allSettled / Promise.any / Promise.race ES2020
Three Promise combinators for handling multiple async operations — allSettled() waits for all to complete regardless of failure, any() resolves with the first success, race() resolves or rejects with the first to settle.
2mo ago
javascript intermediate
Promises & Futures PHP 7.0+
Abstractions representing the eventual result of an async operation — a Promise or Future is a placeholder for a value not yet available, enabling non-blocking code composition without nested callbacks.
2mo ago
concurrency intermediate
Swoole & Async PHP PHP 7.4+
Swoole is a PHP extension providing a coroutine-based async runtime — enabling non-blocking I/O, connection pools, and WebSocket servers without Node.js or external message brokers.
2mo ago
concurrency advanced
Top-Level Await in Modules ES2022
ES2022 top-level await lets you use await at the module root without wrapping in async function — blocking module evaluation until the awaited Promise resolves.
2mo ago
javascript intermediate
Async Error Handling (try/catch + Promise) ES2017
Errors in async functions require try/catch or .catch() — a rejected Promise that's not caught becomes an unhandledRejection that crashes Node or shows a console warning in browsers.
2mo ago
javascript intermediate
Unhandled Promise Rejection ES2015
An unhandled Promise rejection occurs when a rejected Promise has no .catch() or try/catch handler — Node.js 15+ terminates the process on unhandled rejection by default.
2mo ago
javascript intermediate
Coroutines — Cooperative Multitasking PHP 8.1+
Functions that explicitly yield control — enabling concurrent I/O without threads, where code decides when to pause rather than being preemptively interrupted.
2mo ago
concurrency advanced
Exception Groups & except* Python 3.11+
Python 3.11+ ExceptionGroup allows multiple concurrent exceptions to be raised simultaneously — essential for asyncio.TaskGroup where all tasks run even if some fail.
2mo ago
python advanced
Fiber-Based Task Scheduler PHP 8.1+
Building a cooperative multitasking scheduler with PHP Fibers — suspending and resuming tasks at I/O wait points to run multiple tasks concurrently in a single thread.
2mo ago
php advanced
HTTP in Python — requests & httpx Python 3.7+
requests is the standard sync HTTP library; httpx adds async support, HTTP/2, and a similar API — both far more ergonomic than urllib.
2mo ago
python beginner
PHP Async Frameworks PHP 8.1+
ReactPHP and Amp provide event-loop async I/O — enabling concurrent HTTP requests without blocking.
2mo ago
performance advanced
PHP Concurrency Options PHP 7.0+
PHP's concurrency toolkit — Fibers for cooperative multitasking, pcntl for process forking, pthreads for true threading (CLI only), and async frameworks (ReactPHP, Amp).
2mo ago
concurrency advanced