This article explains how to design a high‑concurrency ticket‑sniping service that can handle millions of users by using multi‑layer load balancing, Nginx weighted round‑robin, local stock deduction, Redis for unified inventory, and a Go implementation with performance testing.
This article explores the design of a high‑concurrency ticket‑spike system, covering multi‑layer load balancing, weighted Nginx routing, pre‑deduction inventory strategies using Redis, Go implementation details, and performance testing that demonstrates handling millions of requests while preventing oversell and ensuring high availability.
This article dissects the extreme concurrency challenges of China's 12306 ticket‑spike scenario, presents a layered load‑balancing architecture, compares order‑processing strategies, and provides a complete Go‑based prototype with Nginx weighted routing and Redis atomic stock deduction, complete with performance testing and key takeaways.
This article analyzes the current state of multiple domestic and overseas CMS back‑ends, compares their codebases and performance, and proposes a unified Go‑based architecture with optimization steps to reduce maintenance cost and improve scalability.
This article explains how to build a high‑concurrency ticket‑seckill system using Go, Nginx weighted load balancing, and Redis, covering architecture design, local and remote stock deduction, Lua scripting for atomic operations, and performance testing with ApacheBench to achieve thousands of requests per second without overselling.
This article explains how to build a high‑concurrency train‑ticket flash‑sale system that can handle millions of requests by combining layered load‑balancing, Nginx weighted round‑robin, in‑memory stock deduction, Redis atomic Lua scripts, and a Go HTTP service with channel‑based concurrency control, and it provides performance test results and source code.
This article analyzes the architecture, load‑balancing strategies, stock‑deduction techniques, and Go/Redis implementation needed to support a million concurrent users purchasing ten thousand train tickets without overselling or underselling.
This article explores the architecture and implementation of a high‑concurrency train‑ticket flash‑sale system, covering load‑balancing strategies, weighted round‑robin Nginx configuration, local and remote stock deduction using Go and Redis, performance testing, and key lessons for building reliable, scalable services.
qrpc is a lightweight, high‑performance RPC framework that adopts gRPC's streaming and bidirectional concepts without HTTP/2, offering a smaller binary, lower memory usage, up to three‑fold throughput gains, and flexible modes such as blocking, non‑blocking, streaming, push, and bidirectional calls, all demonstrated with Go code examples and real‑world use cases.
This article explains Go's built‑in error interface, the traditional ways of creating and checking errors before Go 1.13, and the new errors.Unwrap, errors.Is, errors.As functions plus the %w verb in fmt.Errorf introduced in Go 1.13 for error wrapping and inspection.
This article walks you through deploying a WebSocket chat service and a gRPC ping service on Knative, covering repository cloning, Docker image preparation, Knative Service YAML configuration, kubectl deployment commands, and browser‑based verification to ensure the services run correctly in a serverless environment.
This article explores the design of a high‑concurrency train‑ticket flash‑sale system, covering distributed load‑balancing architectures, OSPF/LVS/Nginx strategies, pre‑deduction inventory techniques, Go‑based HTTP services, Redis Lua scripts, and performance testing with AB, demonstrating how to achieve stable, scalable ticket‑purchasing under massive traffic.
This article explores the design of a high‑concurrency train‑ticket flash‑sale system, covering load‑balancing strategies, weighted Nginx configuration, in‑memory pre‑deduction, Redis Lua scripts, and Go implementation, and demonstrates its performance with real‑world stress testing.
This article provides a detailed source‑code walkthrough of Kubernetes' kube‑proxy IPVS load‑balancing mode, explaining the command‑line setup with cobra, the internal ProxyServer and Proxier structures, the BoundedFrequencyRunner, ServiceConfig handling, and the core syncProxyRules function that generates IPVS, iptables and ipset rules.
The series teaches mobile developers how to use Chrome’s Network panel and Wireshark, explains connection keep-alive, demonstrates HTTP 1.x head-of-line blocking with Go and OkHttp, and clarifies fixed-length versus chunked body transfer, providing practical code and traffic analysis for deeper protocol understanding.
This guide walks you through the challenges of manual API documentation, introduces Swagger as a powerful solution, and provides a step‑by‑step tutorial for integrating Swagger with Go projects using the Swag tool, Gin framework, and custom UI enhancements.
This article explains the controller pattern and declarative API in Kubernetes, dives deep into Kubebuilder's architecture—including GVK/GVR, Scheme, Manager, Cache, and Controller components—and provides step‑by‑step guidance with code examples for creating, configuring, and deploying custom resources and their controllers.
This article details how a high‑traffic trading app migrated from Node.js to Go, outlining Go's advantages, drawbacks, and the team's engineering practices—including environment management, dependency handling, efficiency tools, standardized libraries, testing, monitoring, and distributed tracing—to achieve robust, high‑performance backend services.
The article details the step‑by‑step architectural evolution of Mafengwo's instant‑messaging platform—from an initial PHP‑based monolith, through polling optimizations with OpenResty, to a Go‑implemented, micro‑service‑oriented design that improves scalability, reliability, and multi‑device synchronization.
This article walks through the fundamentals of Golang Context, explains how Knative Serving SDK leverages Context for informer and client initialization, and provides step‑by‑step code examples for building serverless applications, including logging, reconciler implementation, and practical deployment tips.
Over three years, Meitu’s long‑connection service “bifrost,” built in Go with MQTT, cut memory use from 22.3 GB to 5.1 GB for 210 k connections—and about 10 GB for a million—by tuning buffers, reducing allocations, employing memory pools, and replacing a goroutine‑per‑connection model with an epoll‑driven event architecture.
This article presents a comprehensive overview of Huajiao's gRPC development practice, covering background decisions, gRPC features, gateway integration, Dart and Go client libraries, component architecture, protobuf conventions, code generation, SDK integration, documentation tooling, debugging strategies, and future roadmap.
This article walks through building a simple RPC framework in Go using about 300 lines of code, covering RPC fundamentals, TLV network data format, serialization, transport layer, server and client implementations, and a complete example to help readers understand RPC concepts.
This article provides a comprehensive analysis of Go’s non‑generational concurrent mark‑and‑sweep garbage collector, tracing its evolution from early stop‑the‑world implementations to the mixed write‑barrier design in Go 1.8, and explains how to interpret GC traces, tune GC parameters, and reduce latency caused by mark‑assist and STW pauses.
This article explains the drawbacks of using a vendor directory in Go projects, outlines how Go module proxy solves those issues, and provides step‑by‑step guidance on configuring GOPROXY, choosing public or self‑hosted proxies, and recent Go 1.13 enhancements.
Go‑Spring is a Go‑language application framework that brings Spring‑style conventions such as dependency injection, auto‑configuration, starter modules, interface‑based design, and integrated testing to developers, enabling organized code, easy component swapping, configuration binding, and full‑stack unit tests while supporting databases, messaging, and microservice features.
This article examines Go's memory allocation mechanisms in version 1.12.6, detailing the roles of spans, mcache, mcentral, and mheap, explaining tiny, small, and large object handling, and describing GC and heap reclamation improvements for efficient runtime performance.
This article revisits the author’s earlier talk on software architecture, reorganizes and expands it with detailed explanations of Clean Architecture’s layered design, dependency rules, and related concepts such as DDD, while reflecting on how these ideas can reduce code modification difficulty and guide personal growth as an architect.
The article demonstrates how Go’s built‑in pprof tools can be used for live performance profiling, walking through two real‑world cases—one where a malformed JSON request caused massive object allocation and CPU spikes, and another where per‑call self‑referencing structs leaked memory—while offering practical tips on input validation, allocation reduction, and GC monitoring.
This article explores the challenges of building layered, flexible database queries in Go, compares GORM, sqlx, and squirrel, and proposes a custom, option‑based query‑builder pattern that stays idiomatic and extensible for complex search scenarios.
This article enumerates ten frequent Go programming errors—from unknown enum handling and benchmark mis‑optimizations to pointer misuse, slice initialization, context pitfalls, and error‑handling practices—explaining why they occur, showing reproducible code examples, and offering concrete fixes to write more reliable Go code.
This guide walks through building a Go REST‑API, containerizing it, deploying multiple Knative Service revisions, configuring traffic percentages for gray releases, validating revisions before traffic shift, and rolling back, while comparing Knative’s traffic‑driven model to traditional pod‑based deployments.
This article chronicles the evolution of MaFengWo's instant‑messaging platform, detailing the transition from a simple PHP implementation to OpenResty optimizations, the introduction of multi‑mode routing in IM 2.0, and a complete service‑oriented redesign in Go for IM 3.0, while addressing scalability, multi‑device synchronization, and message reliability.
This article provides a comprehensive walkthrough of using Go's crypto library for hashing, symmetric and asymmetric encryption, certificate generation, and TLS/HTTPS server and client implementation, illustrating how these techniques are applied in kubeadm to simplify Kubernetes cluster security.
This article describes how a PHP‑based backend service integrates Adobe After Effects' command‑line renderer and FFmpeg to generate, split, concatenate, and compress user‑uploaded video templates for a mini‑program, covering architecture, workflow, code snippets, and performance optimizations.
Gaea is an open‑source MySQL middleware created by Xiaomi that replaces MyCAT, offering read‑write splitting, sharding, namespace‑based multi‑tenant configuration, Go‑driven architecture, hot‑reload via etcd, comprehensive monitoring, and a visual management console, with its source hosted on GitHub.
This article describes how a PHP‑based backend service integrates After Effects' aerender command‑line tool and FFmpeg to automatically generate, split, compress, and deliver video templates for a mini‑program, covering requirement analysis, architecture, rendering workflow, code snippets, and performance optimizations.
This article explains how the Go community drives the future "Go 2" language updates through a standardized proposal selection and evaluation workflow, shows how to locate proposals on GitHub using specific labels, and points to official releases and blog resources for early access and detailed information.
This tutorial explains how to implement a simple LL(1) parser in Go for SQL queries, covering lexical analysis, syntax analysis, finite‑state‑machine strategy, and testing, providing complete code snippets and practical guidance for developers interested in parser construction.
This tutorial explains Linux inotify's event model and demonstrates how to employ the Go package golang.org/x/sys/unix to initialize inotify, add watches, and process file system events in order to achieve automatic configuration file hot‑reloading in Go applications.
This tutorial explains how to implement hot‑reloading of Go configuration files by manually sending Unix signals, covering the creation of a signal‑listening goroutine, use of the signal.Notify API, selective handling with select, and a complete example that loads JSON config on SIGUSR1.
This interview with Ctrip's He Xinming details the motivation, architecture, features, performance benchmarks, and future roadmap of dubbo-go, the Go language implementation of Apache Dubbo, highlighting its role in bridging Java and Go microservice ecosystems and its cloud‑native aspirations.
By applying Mike Cohn’s testing pyramid to a Go scheduling service, the author demonstrates a structured approach that combines straightforward unit tests, organized integration suites with setup/teardown hooks and coverage scripts, expressive GoConvey assertions, and end‑to‑end trace‑ID verification, while noting remaining gaps.
gobox is a self‑developed lightweight Go framework comprising various utility boxes such as color, crypto, exception, gohttp, golog, and gomisc, with detailed explanations of its origin, naming, supported modules, and extensive code examples demonstrating usage for logging, error handling, slice deduplication, file checks, JSON handling, and time utilities.
The article presents a comprehensive overview of the challenges, evolution, design principles, and concrete implementation techniques behind building a large‑scale microservice framework at Didi, illustrating how systematic abstraction, reliable I/O handling, and strict interface stability can dramatically improve development efficiency and system robustness.
The article walks through Go’s 1.9.2 scheduler on Linux, explaining how the three abstractions—G (goroutine), M (OS thread), and P (processor)—are created, bound, and used in the scheduling loop to run, yield, and balance goroutines via local, global, and stolen queues.
In his Go China talk, senior Didi engineer Du Huan outlined the design and implementation of a large‑scale microservice framework that abstracts I/O, injects tracing via protocol hijacking, optimizes timers, and enforces fail‑fast circuit breaking, delivering faster development, higher stability, seamless upgrades, and a unified operating‑system‑like layer for thousands of services.
Go’s reflection, accessed via the reflect package’s TypeOf and ValueOf functions, lets programs inspect and modify runtime types and values—including fields, tags, and slices—while obeying settable rules, enabling generic utilities such as JSON serialization, deep equality checks, and dynamic ORM-like behavior.
This article shares practical guidelines and a detailed directory layout for organizing Go projects, illustrated with the gobox-demo template, covering configuration, source code organization, controller/action separation, service layer structuring, and best‑practice recommendations for clean, maintainable backend development.
The article thoroughly examines Go’s interface system, explaining static duck typing, the differences between value and pointer receivers, the internal iface/eface structures, how interfaces are constructed and converted, compiler implementation checks, type assertions, runtime polymorphism, and contrasts these mechanisms with C++ abstract‑class interfaces.
SQLFlow, an open‑source project from Ant Financial, bridges SQL engines and AI frameworks so that users can train and predict machine‑learning models with simple SQL statements, dramatically lowering the technical barrier for analysts and engineers across diverse data platforms.
SQLFlow is an open‑source project that connects diverse SQL engines (MySQL, Hive, SparkSQL, etc.) with AI frameworks (TensorFlow, PyTorch, XGBoost, etc.) through extended SQL syntax, enabling analysts to train and predict models using only a few SQL statements while aiming for high scalability and performance.
The Shanghai Go technology salon brought together senior architects from QuTouTiao, Qiniu, and Bilibili to share real‑world implementations of Service Mesh, full‑link tracing, and microservice governance using Go, highlighting practical challenges, solutions, and future directions.
The article explains Go slices as three‑field descriptors pointing to an underlying array, details creation methods, shows the low‑level runtime representation and assembly for make, describes how append triggers growslice with capacity‑doubling or ~25 % growth and alignment, and clarifies sharing, nil slices, and passing semantics.
Go’s syscall mechanism uses assembly‑implemented entry functions like Syscall and Syscall6 to invoke the kernel, while the runtime’s entersyscall and exitsyscall hooks notify the scheduler, allowing P resources to be released during blocking calls and handling privileged low‑level syscalls separately.
The Shanghai Go Language Tech Salon, co‑hosted by Qutoutiao and Jikebang, gathered senior architects from Qutoutiao, Qiniu, and Bilibili to share real‑world implementations of Go, covering a self‑built Service Mesh, full‑link tracing, and microservice governance, followed by an interactive Lean Coffee discussion on Go’s future.
This article reviews HTTP/2's core features such as binary framing, multiplexing, header compression, and server push, evaluates their performance benefits and real‑world limitations, discusses implementation challenges in Go and proxy servers, and provides references for further study.
This article explains the original design goals of Go, outlines its key features and advantages such as fast compilation, simple syntax, powerful concurrency, and easy deployment, and compares it with languages like Java, C#, C/C++, JavaScript, Python, Scala, and Erlang.
This article demonstrates how to add on‑demand and periodic HTTP/2 server‑push functionality in Go, explaining the required handlers, showing complete Go code examples, and detailing the HTTP/2 frame exchange observed with an h2c client.
This article explains the internal architecture of Spark Operator, covering Kubernetes operator fundamentals, CRD definitions, code layout, job submission flow, state machine handling, monitoring integration, and troubleshooting techniques for reliable Spark workloads on Kubernetes.
This article details ByteDance's migration to Go for its backend, covering the reasons for choosing Go, the design of a five‑tuple microservice architecture, concurrency models, timeout handling, performance tuning, monitoring, and engineering practices that enabled a production system handling over 300 billion daily requests.
This article demonstrates how to build a minimal HTTP/2 server in Go that responds only with header frames, covering certificate generation, server code, frame structures, the http2Framer API, and how to test the implementation using curl, providing both conceptual explanations and full source listings.
This article explains HTTP/2's header compression using the HPACK format—including static and dynamic tables, Huffman coding, and literal encoding—and the Server Push mechanism with PUSH_PROMISE frames, illustrating how these features reduce bandwidth and improve request latency.
In this interview, Didi R Lab senior engineer Du Huan discusses his decade‑long Go experience, the language’s low‑cost entry, system‑level performance and cloud‑native strengths, upcoming enhancements like generics, his large‑scale microservice framework design for Gopher China 2019, and practical advice for developers and enterprises adopting Go.
This article provides a comprehensive overview of HTTP/2, explaining its binary framing, multiplexing, and the various frame types such as DATA, HEADERS, PRIORITY, RST_STREAM, SETTINGS, PUSH_PROMISE, PING, GOAWAY, WINDOW_UPDATE, and CONTINUATION, with specific focus on how Go's HTTP server implements these features.
To implement a graceful hot restart for a Go HTTP service, the program listens for SIGHUP, forks a child process that inherits the listening socket via an extra file descriptor, the parent stops accepting new connections and shuts down while the child begins serving, ensuring uninterrupted client requests.
This article explains how Alibaba's open‑source PouchContainer adds both unit‑test and integration‑test coverage reporting using Go's cover tool, TravisCI, Codecov, and custom test harnesses, providing step‑by‑step commands, code snippets, and PR details to raise overall coverage from 18% to 60%.
This article presents SlimTrie, a trie‑based indexing structure that dramatically reduces memory consumption while maintaining fast query speeds, detailing its design, compression techniques, implementation steps, memory analysis, and performance comparisons with map and B‑Tree structures for large‑scale storage systems.
This article explains the inner workings of the Kubernetes scheduler, covering its architecture, pod queue handling, filtering, prioritization, binding, preemption, and code-level details, while also discussing current limitations and future enhancements such as the V2 framework and gang scheduling extensions.
The article details the step‑by‑step evolution of the WeChat‑like instant messaging platform at 58 Group, describing how the system transitioned from a simple PHP short‑connection architecture to a layered micro‑service architecture using Java‑based RPC, Go‑based short‑connection services, distributed storage, message queues, and clear separation of storage, logic, and interface layers.
This article recounts the migration of the Core Course (CC) service from a custom Ruby RPC framework to a Go‑based gRPC solution, detailing technical choices, performance bottlenecks, testing strategies, monitoring setup, and the substantial improvements achieved after launch.
This article introduces Go’s basic program structure, how to run and build Go applications, the role of comments, why semicolons are omitted, and best practices for organizing imports, providing a concise foundation for writing clean Go code.
This article provides a step‑by‑step guide on installing the Protobuf compiler, setting up the Go plugin, writing .proto definitions, generating Go code, and demonstrating serialization and deserialization of Protobuf messages in a Go application, complete with troubleshooting tips and reference links.
This article presents a comprehensive overview of Ant Financial's ServiceMesh implementation, detailing the background, architecture, key features of SOFAMesh and MOSN, technical case studies, performance benchmarks, security capabilities, and future outlook for cloud‑native network proxies.
Zhihu’s backend team migrated high‑traffic services from Python to Go, detailing the motivations, step‑by‑step migration process, performance gains, project structure, testing practices, static analysis, and operational lessons such as graceful traffic shifting and service deprecation.
This article introduces core Go concepts—including slice internals, common pitfalls when using slices and maps, type conversion techniques, function parameter behavior, and a stack‑overflow‑safe directory‑listing example—providing practical code snippets and guidance for reliable Go development.
This article explains how etcd stores and retrieves multiple revisions of a key using a B‑tree index, details the read and write paths, describes index restoration on startup, and shows how the watch subsystem delivers change events to clients, all illustrated with Go code snippets.
This article translates David Cheney's 2014 Gocon talk, detailing five Go language features—efficient value handling, inlining, escape analysis, goroutine scheduling, and dynamic stack management—that together explain Go's performance advantages, memory usage, and concurrency model.
Naftis is an open‑source web dashboard for Istio that lets users define custom task templates, manage services, view topology and metrics, and provides step‑by‑step Kubernetes deployment instructions, Docker images, and a complete developer guide for building and running the platform.
The article investigates a Go 1.8.3 issue where goroutines block on ForkLock during fork‑exec, analyzes the kernel and Go runtime behavior, presents a hypothesis about memory‑heavy processes, validates it with experiments, and shows that upgrading to Go 1.9 or later eliminates the problem.
This article explains the fundamental differences between Go arrays and slices, describes their memory layout and value semantics, illustrates various slice declaration forms, and details the rules governing slice capacity growth with example code and visual diagrams.
The article describes how to build a Go‑based backend for a WeChat lottery mini‑program using the Echo framework, Tencent Cloud load balancer, Nginx, Redis and MySQL, detailing the system architecture, API design, database and Redis integration, WeChat login flow, activity state machine, and lessons learned.
This article details the preparation of the development environment, choice of Go and gopacket, MongoDB integration, the multi‑threaded architecture for real‑time packet capture, and a series of performance optimizations addressing slow logs, packet loss, and CPU usage.
Xiaomi is open‑sourcing its Go‑based SQL Optimizer and Rewriter (SOAR) at OSCAR Days, a tool that automatically checks SQL quality, suggests index improvements, rewrites queries, provides EXPLAIN analysis, and integrates with editor plugins and a web self‑audit platform to boost database reliability and developer productivity.
This article explains what a non‑reentrant function is, why it matters in concurrent Go programs, and demonstrates two practical implementations—using a sync.Mutex and an atomic flag—to ensure a function runs only once at any given time.
This article shares practical Golang notes, covering compilation, package structure, basic syntax, common pitfalls like GOPATH issues, and step‑by‑step screenshots of setting up a Hello World program in Eclipse.
This article demonstrates how to build an HTTP/2 server and client in Go, covering TLS certificate generation, server and client implementations, switching between HTTP/1.1 and HTTP/2, server‑push handling, and full‑duplex echo communication with complete code examples.
This article describes the shortcomings of a legacy log‑collection architecture, proposes a streamlined real‑time design that centralises configuration in Etcd, uses a single Go‑based logagent to tail files, applies per‑service rate limiting, and forwards logs to Kafka for downstream processing.
This article explains how Kubelet obtains pod configurations, processes updates through its syncLoop, coordinates pod workers, and ultimately invokes the container runtime's SyncPod method to keep node pods aligned with the desired state.
This article explains how Go organizes source files into packages, the difference between import paths and package names, how the compiler chooses between source code and compiled .a files, the role of import aliases, and why a directory can contain only one package.
The article describes how a DBA team at Ele.me transformed manual database management into a fully automated, platform‑driven operation covering monitoring, alarm handling, MHA automation, resource pooling, large‑scale migration, SQL review, and multi‑active DDL release using Go‑based tools and custom workflows.
The article details Alibaba’s Sigma scheduling and cluster management platform—its three‑layer architecture, data and state consistency strategies, real‑world case studies, Go‑based redesign, integration with Kubernetes APIs, and lessons on concurrency, high availability, and pod dispersion for massive Double 11 traffic.
The article examines Uber’s high‑throughput Go logging library zap, detailing its structured‑logging design, separation of concerns, copy‑on‑write filtering, extensive sync.Pool object reuse, reflection‑free type‑specific encoding, dynamic HTTP level control, and supplemental features such as a sugar API and log‑rotation, which together deliver superior performance over traditional libraries.
This article analyzes Uber's open‑source Go logging library zap, explaining its architectural trade‑offs, performance‑boosting techniques such as object pooling, reflection avoidance, and write‑time copying, and offers practical guidance for developers who want to build high‑performance logging components in Go.
This guide walks you through every step of learning Hyperledger Fabric—from setting up the environment and deploying single‑ and multi‑node networks to developing, installing, and testing chaincode with Java SDK—providing a hands‑on roadmap for blockchain developers.
This article explains frequent pitfalls in Go programming—including file‑naming conventions, defer execution order, panic value handling, for‑range copying, struct composition, init function behavior, pointer operations, command‑line arguments, slice capacity bugs, map usage, and channel communication—while providing clear examples and recommended fixes.
This article explains Go's concurrency foundations, detailing the difference between concurrency and parallelism, the CSP model using goroutines and channels, and the internal M‑P‑G scheduler architecture that balances work across processors and system threads.
This article explains the fundamentals of database transactions, introduces Vitess's architecture, and details how Vitess implements a two‑phase commit protocol for distributed transactions, including transaction IDs, metadata management, preparation, commit, rollback, error handling, and performance considerations, with illustrative Go code snippets.
This article explains Vitess’s two‑phase commit mechanism for distributed transactions, covering the ACID properties, shard architecture, transaction manager roles, detailed code flow, metadata handling, preparation, commit, rollback, and various failure scenarios, along with practical examples and performance considerations.
This article walks through upgrading Consul to 1.2, configuring service‑mesh support, building two Go micro‑services, registering them with Consul, reloading the configuration, testing the mesh with curl, and provides a detailed analysis of Consul’s service‑mesh architecture, advantages, and limitations.
