This article explains what middleware is, how Redux adopts the middleware pattern, demonstrates the flow of actions with and without middleware, shows how to implement custom middleware including logging and async handling, and presents the official applyMiddleware implementation with code examples.
This article explains the historical problems of callback hell and ineffective return/throw in asynchronous JavaScript, introduces Promises as a contract‑based solution that flattens nesting, enables proper error handling, and outlines their core API and usage patterns.
While most JavaScript developers are familiar with using Promises, many overlook subtle nuances; this article presents four Promise snippets, challenges you to identify their differences, and invites curious programmers to explore further, even mentioning an upcoming Node.js meetup in Guangzhou.
The article introduces the upcoming C# 7.0 language enhancements—including output variables, pattern matching, extended switch statements, tuples, deconstruction, local functions, numeric literal improvements, ref returns, new async return types, and throw expressions—explaining their syntax, usage, and current preview limitations.
This article explains how to combine Twisted's event‑driven reactor with Stackless Python's micro‑threads by setting up a reactor tasklet, creating filtering and wrapper decorators, and providing deferred_tasklet and blocking_tasklet utilities to run asynchronous code synchronously.
This guide outlines ten practical strategies—including parallel execution, async APIs, caching, gzip compression, client‑side rendering, lean sessions, query tuning, native V8 methods, Nginx front‑end, and JavaScript bundling—to dramatically boost the performance of Node.js web applications.
This article provides a comprehensive overview of Node.js’s worldwide adoption, its technical strengths and weaknesses, architectural balancing strategies, the author’s team’s practical stack and tooling choices, and guidance on becoming a full‑stack developer using Node.js technologies.
This article explains the Promise pattern in JavaScript, showing why nested Ajax callbacks hurt readability and user experience, how Promise improves flow with three states, and demonstrates practical usage with a lightweight promise.js library and jQuery Deferred examples.
This article introduces JavaScript Promises, covers their history, demonstrates how to promisify callbacks, use Promise.all for parallel tasks, chain with then, handle execution order, and implement custom cancellation, providing clear code examples and best‑practice guidance.
This article demystifies the use of yield* in Koa middleware by comparing plain yield with delegating yield, explaining how the co library handles generators and promises, and outlining the practical advantages of native yield* syntax for clarity, performance, and correct this binding.
The article summarizes Zhao Haiping’s 2015 QCon talk on how asynchronous processing, profiling, and dependency‑tree scheduling can dramatically improve performance and scalability of distributed backend systems, drawing lessons from Facebook’s migration to async PHP and Alibaba’s ongoing optimization efforts.
The article explains that asynchronous programming is essential for creating responsive user interfaces and highly scalable server applications by preventing long‑running operations from blocking UI threads or thread‑pool threads, and outlines the differences between CPU‑bound and I/O‑bound workloads.
