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The article explains how to handle business scenarios that require splitting large data sets into concurrent I/O requests and sequential aggregation by presenting a Go‑based chunk processing framework with map and reduce functions, configurable concurrency, and example code.
Didi’s observability platform leverages non‑intrusive eBPF probes to automatically capture and validate service‑to‑service call tuples, supplement missing SDK data, achieve roughly 80 % core‑path coverage, and address verification challenges while planning future user‑space VM hooks and deeper MTL integration.
This article explains how asynchronous programming and event‑driven mechanisms work in both frontend JavaScript environments and backend systems such as Go and Linux epoll, covering concepts like the event loop, macro‑ and micro‑tasks, goroutines, channels, and kernel interrupt handling.
This article explains how a Go hello‑world program starts, tracing the ELF entry point, runtime initialization, GMP scheduler setup, creation of the main goroutine, and the flow into the user's main function.
Effective code review bridges design and implementation by focusing on concrete Go code, enforcing limits on file and function size, nesting depth, and duplication, while promoting early returns, composition over inheritance, clear package structure, and disciplined formatting to prevent hidden technical debt.
The article proposes a modular, building‑block development framework with standardized SOP workflows and automation tools to overcome human bottlenecks, lack of reuse, and slow R&D cycles in fast‑paced revenue activities, enabling double the delivery rate, 33 % fewer bugs, and stable team size.
This article shares a Tencent backend engineer's extensive experience with code review, outlining why engineers and leaders should practice it, identifying common pitfalls such as duplicated code and premature optimization, and presenting concrete principles, model design advice, and Go code examples to improve software quality.
This article reviews the ten most popular backend frameworks for 2023—including Spring Boot, Django, Express.js, ASP.NET Core, Laravel, Ruby on Rails, Fiber, CakePHP, Flask, and Play—explaining their key features, language ecosystems, and recommended learning resources for developers of all levels.
Didi’s redesigned Spatial‑Temporal Supply‑Demand System replaces a single‑Redis bottleneck with a multi‑cluster routing layer, semantic sharding, multi‑level caching and delayed queues, achieving higher horizontal scalability, fault isolation, ~30 % latency reduction, increased cache hit rates, fewer query nodes, and faster, code‑free feature configuration.
The author shares a detailed recap of interview preparation, processes, technical questions, and personal reflections from recent backend engineering interviews at several top Chinese tech companies, highlighting the importance of solid fundamentals, Go knowledge, and systematic study resources.