This article walks through a Python solution that loads user data from a JSON file, adds new usernames, emails, and passwords while preventing duplicates, and saves the updated information back, demonstrating practical data persistence without recreating dictionaries each run.
This article presents a collection of practical Python code snippets covering timestamp retrieval, date formatting, JSON correction, URL query parsing, file comment extraction, INI configuration reading, and project‑relative path resolution to help developers handle common tasks efficiently.
This newsletter curates recent developer-focused releases and articles, including the open‑source launch of Rolldown, TypeScript 5.4, Storybook 8, performance‑focused TypeScript tips, faster JSON alternatives, reactive front‑end development, a software engineering guide, Figma productivity tricks, and Canvas drawing optimizations.
This article demonstrates how to leverage ChatGPT to automatically extract structured key information from conversational text by defining input keywords, crafting effective prompts, testing iterative refinements, and integrating the process into a Coze workflow that outputs clean JSON data.
This guide shows how to install ThinkORM for PHP 8, then demonstrates inserting, querying, and updating JSON‑type columns both with raw queries and model classes, covering whole‑JSON operations, conditional searches, and handling JSON arrays in a ThinkPHP environment.
This article presents a systematic approach to distinguish effective from ineffective diff failures in traffic replay by designing a JSON similarity model based on value, key, and structural comparisons, implementing the algorithm in Java, and demonstrating its superior accuracy over traditional system diff through extensive experiments.
This article explains how to use the Lottie library to replace hand‑written CSS/JS or GIF animations with vector‑based, cross‑platform switch animations, covering installation, configuration options, direction control, playback speed, JSON modification, and a helper function for updating values.
This guide explains what PHP's stdClass is, how to convert arrays to objects and back, store data with dynamic properties, and use json_encode/json_decode for JSON serialization, providing clear code examples and important caveats about its inheritance behavior.
This article presents a curated collection of essential open‑source Java libraries—including logging, JSON parsing, testing, utility, HTTP, XML, Excel, bytecode, database connection pooling, messaging, PDF, date‑time, collections, email, HTML parsing, encryption, embedded databases, JDBC debugging, serialization, networking, and more—to help developers boost productivity and write better code.
This article explains the new EXPLAIN INTO clause introduced in MySQL 8.1 for storing JSON‑formatted EXPLAIN output in a user variable and the EXPLAIN FOR SCHEMA clause added in MySQL 8.2 for running EXPLAIN on other schemas, showing how to extract costs with JSON functions and automate collection with stored procedures.
This guide explains how to build and register a custom Laravel middleware that standardizes API responses by enforcing JSON format, formatting successful and error payloads, and optionally handling JWT authentication errors, improving clarity and developer experience.
This article introduces the Python profig library for converting configuration files between YAML, JSON, and INI formats, providing five practical code examples for interface automation work.
Using Jackson's ObjectMapper for JSON parsing, this article benchmarks three approaches—creating a new mapper per call, sharing a global singleton, and using ThreadLocal—revealing that a single shared ObjectMapper can achieve up to ten times higher throughput, while ThreadLocal offers only modest gains.
This article explains the JSON Pointer syntax, provides encoding rules and practical examples, demonstrates how to extract values from complex JSON structures using Jackson's JsonUtil in Java, and shows how to map nodes to Java beans, offering a concise guide for developers.
This article explains PHP's json_decode() function, detailing its purpose, required and optional parameters, and provides a complete code example that demonstrates decoding a JSON string into an associative array and iterating over its contents.
This article explains the concept of monkey patching in Python, demonstrates how to replace the built‑in json module with the faster ujson library using a simple runtime patch, and shows performance improvements through code examples and timing tests.
This article explains what JSON format is, introduces Python's built‑in json module, and provides step‑by‑step code examples for converting JSON strings to Python objects and serializing Python data structures back to JSON strings.
This guide presents a curated list of essential Java libraries—including testing, JSON, logging, utility, XML, Excel, bytecode, collections, HTML parsing, encryption, embedded databases, serialization, networking, Lombok, and Testcontainers—that can dramatically improve productivity and code quality for backend development.
This article explains how to use Lua scripts for performance testing by providing reusable functions that encapsulate HTTP and HTTPS GET/POST requests, support JSON and FormData payloads, and enable file uploads, complete with full code examples.
This article explains the INI, YAML, and JSON configuration file formats, provides example files for each, and demonstrates how to parse them in Python using configparser, PyYAML, and the built‑in json module, especially for API automation testing.
This article reviews a production incident caused by a simple log statement, reconstructs the scenario with a CountryDTO example, analyzes FastJson's ASM‑based serializer internals, explains which getter/is methods are invoked during serialization, and proposes annotation‑driven coding standards to avoid similar bugs.
This guide walks through creating a dynamic, theme‑switchable big‑screen dashboard using Echarts on the front end and a lightweight Java backend, covering requirements, architecture, configuration, code structure, and how to obtain the source code.
This article analyzes a Java serialization issue caused by FastJSON invoking a getter on a null field, explains the underlying ASM‑based serializer generation, and provides best‑practice code examples and annotations to prevent similar bugs in backend development.
This article provides a comprehensive comparison between PostgreSQL and MongoDB across dimensions such as license, data model, JSON support, performance, reliability, scalability, usability, operability, and ecosystem, helping readers decide which database better fits their application requirements in 2023.
This tutorial presents a complete overview of Python file handling, covering opening and closing files, absolute and relative paths, various access modes, reading and writing techniques, pointer control, file copying, CSV processing, in‑memory streams, sys redirection, and JSON/pickle serialization, all illustrated with practical code examples.
The article introduces Sonic, ByteDance’s high‑performance Go JSON library built with Just‑In‑Time compilation and SIMD vectorization, explains its design motivations, usage patterns, API features, compatibility considerations, and showcases benchmark results that demonstrate its superiority over other popular JSON parsers.
JSONCompareUtils, a full‑JSON comparison component added to the Artemis framework, lets automated tests recursively compare large JSON responses via a Maven‑provided library with Java and Python wrappers, streamlining service‑splitting, BC‑traffic, and cross‑environment validation while dramatically cutting manual verification effort and speeding regression testing.
This guide explains how the vue‑swift‑i18n VS Code extension automates detection, JSON generation, key replacement, tooltip display, JSON flattening, and code completion for Chinese strings in Vue projects, providing step‑by‑step instructions, configuration options, and practical examples to streamline internationalization.
This article explains what JSON is and demonstrates how to encode and decode JSON data in PHP using json_encode() and json_decode(), including examples with associative arrays, indexed arrays, JSON_FORCE_OBJECT, and iteration over decoded structures.
This article presents a complete guide to building a data‑visualization big‑screen dashboard, covering effect screenshots, requirement specifications, overall architecture, development environment setup, JSON library configuration, code structure, startup commands, browser access, and source‑code acquisition.
This guide shows how to install, import, and use the JMESPath and JsonPath Python modules to perform basic and advanced queries on JSON data, including example scripts that filter, sort, and extract specific fields.
This article introduces how to build a Chrome extension using Python to convert JSON data to FormData format and vice versa, improving development efficiency through browser-based data format conversion.
During a workflow form update, adding a new JSON attribute caused front‑end errors; the article investigates how JavaScript and Java (fastjson) handle control characters differently, presents experiments, code snippets, and offers practical recommendations to avoid similar JSON parsing issues.
This article explains Spring Boot's default JSON response, the internal HttpMessageConverter selection process, and how to configure XML and custom YAML responses by adding Jackson dependencies and implementing a custom HttpMessageConverter.
This article demonstrates how to create a dynamic, real‑time data visualization dashboard using the Echarts library on the front end and a Java‑based backend, covering requirements analysis, architecture design, environment setup, code structure, deployment, and source‑code acquisition.
This article presents a step‑by‑step technical guide for creating a real‑time, dynamic data‑visualization dashboard using Echarts on the front end and a Java‑based backend, covering design screenshots, requirement analysis, architecture, configuration, code structure, deployment commands, and source‑code acquisition.
Learn how to create a lightweight, thread‑safe Python configuration manager that reads from and writes to a JSON file, ensures a single global Config instance across multiple threads, and persists changes on program exit using the atexit hook.
This article provides a step‑by‑step tutorial on creating a dynamic, real‑time data visualization dashboard using the Echarts front‑end library and a Java Web backend, covering requirements, architecture, configuration, code structure, deployment, and source‑code acquisition.
This guide demonstrates how to use Python's pandas library to merge multiple Excel workbooks—whether from a single folder, across several sheets, or into a single DataFrame—and then convert the resulting data into JSON format, including detailed code examples and explanations.
A seemingly harmless log addition caused a NullPointerException during FastJson serialization, prompting a step‑by‑step investigation of the generated ASM serializer, JavaBeanSerializer workflow, getter detection rules, and practical code‑style guidelines to avoid similar pitfalls.
This article provides PHP functions that wrap cURL to perform GET, POST, PUT, DELETE, and PATCH HTTP requests, automatically handling JSON encoding of data and decoding responses into associative arrays, with code examples for each request type.
This article explains the JSON Patch standard (RFC 6902), detailing its purpose, structure, supported operations, ordering and atomicity rules, and provides concrete code examples for add, remove, replace, move, copy, and test operations, including edge‑case handling.
This article provides a comprehensive overview of MySQL 8.0 enhancements, covering performance improvements such as contention‑aware scheduling and hash joins, security upgrades including authentication plugins and password policies, optimizer refinements, and various other features like persistent variables, GIS support, and binlog expiration handling.
This article explains how RESTful API design reduces testing complexity by using unique URIs, standard HTTP methods, and JSON data exchange, and shows how test engineers can extend their frameworks with serialization support and added PUT/DELETE operations.
This article benchmarks the serialization and deserialization performance of four popular Java JSON libraries—Gson, Fastjson, Jackson, and Json‑lib—using JMH, analyzes the results across different operation counts, and provides guidance on selecting the most suitable library for high‑performance applications.
This article explains how fastjson2 achieves significant performance gains by replacing reflection with Java 8 Lambda‑generated function mappings, applying zero‑copy String construction, and implementing hand‑crafted parsers for common types such as dates, backed by benchmark data.
This article explains the concepts, design of JSON configuration structures, component container patterns, editing side form generation, remote component store integration, static publishing, version management, and inter‑component communication for constructing a data dashboard platform using modern frontend technologies.
This article provides a step‑by‑step tutorial on installing, configuring, and using Alibaba's open‑source DataX tool to perform both full and incremental data synchronization between MySQL databases on Linux, covering framework design, job architecture, JSON job files, and practical command‑line examples.
This tutorial explains how to install and configure Elasticsearch and Kibana, demonstrates CRUD operations, bulk data import, and shows how to use Logstash to ingest, transform, and index flight JSON data, covering both batch and near‑real‑time processing techniques.
This article introduces DataX, an open‑source data integration tool, explains its architecture, and provides step‑by‑step instructions—including environment setup, installation, job JSON creation, and command execution—to achieve fast full‑ and incremental synchronization between MySQL databases.
This article documents a month‑long effort to replace Fastjson with Gson in Java projects, analyzing security vulnerabilities, comparing performance and features of Fastjson, Jackson, and Gson, and providing detailed migration steps, code examples, and pitfalls to avoid for large‑scale backend systems.
This tutorial explains how to create, query, update, and delete Elasticsearch indices and documents using RESTful HTTP requests, covering basic CRUD operations, various query types, pagination, sorting, aggregations, highlighting, and mapping definitions with practical JSON examples.
Sonic‑CPP, an open‑source C++ JSON library co‑developed by ByteDance’s STE and Service Framework teams, leverages SIMD vectorization, optimized memory layout, on‑demand parsing, and a compact DOM design to achieve up to 2.5× faster parsing than RapidJSON and competitive serialization performance, with extensive benchmark results and production‑grade usage.
The brief explains how Lombok’s @Builder can clash with JSON libraries and how adding no‑args and all‑args constructors resolves it, shows how to adjust log levels at runtime via Arthas or Spring’s LoggingSystem, outlines JWT structure and security cautions, and warns of common Java 8 parallelStream performance and correctness pitfalls.
This tutorial explains Python's file opening and closing methods, various file path formats, reading and writing techniques including with‑open, pointer manipulation, copying files, CSV read/write operations, in‑memory streams with StringIO/BytesIO, sys.stdin/stdout usage, and data serialization/deserialization using JSON and pickle.
This article presents a step‑by‑step tutorial for creating a dynamic, real‑time data visualization dashboard using Echarts on the front end and a Java Web backend, covering design, deployment, architecture, configuration, code structure, and source acquisition.
JSON Hero is a lightweight, feature‑rich JSON utility that offers multiple viewing modes, easy installation via Git and npm, drag‑and‑drop file handling, searchable tree structures, and shareable links, making JSON inspection and editing more intuitive for developers.
This article walks through a real‑world Python encoding problem where Unicode \u sequences cause garbled Chinese text, demonstrates the faulty code, and provides a corrected solution using json.dumps with ensure_ascii=False and GBK encoding to produce proper Base64 output.
This tutorial walks through building a minimal MVP for the Linkworld iOS app by applying the MVVM pattern, creating a ViewModel, fetching JSON data with URLSession, and adding, editing, and deleting identity cards using SwiftUI state management and context menus.
A seemingly harmless log addition caused a FastJson alarm, leading to a deep dive into Java bean serialization, ASM‑generated serializers, method invocation rules, and best‑practice guidelines for clean, framework‑agnostic JSON handling in backend development.
This article provides a thorough tutorial on Python file I/O, covering opening and closing files, mode flags, absolute and relative paths, reading and writing techniques, file copying, CSV read/write, in‑memory streams, sys module redirection, and serialization with JSON and pickle, including code examples and best practices.
This article explains how a Python web‑scraping request failed due to extra nested parameters, shows the step‑by‑step debugging process, and demonstrates that deleting trivial 0/1 values can restore the request, offering a practical tip for similar crawling issues.
This article presents a step‑by‑step tutorial for creating a dynamic, real‑time data visualization dashboard using Echarts on the front end and a Java‑based backend, covering design mockups, requirement analysis, architecture, environment setup, code structure, deployment commands, and source code acquisition.
The article explains the PHP 8.3 RFC that introduces a built‑in json_validate function, describing its signature, parameters, return values, usage examples, community discussion, reasons for inclusion, and the impact on major PHP projects, while noting its compatibility with the existing json_decode parser.
This comprehensive guide walks you through Python's file handling—from opening and closing files, using absolute and relative paths, and various read/write modes, to copying files, working with CSV, in‑memory streams, and serializing data with JSON and pickle—complete with clear code examples.
This article shows how to handle irregular JSON strings exported from a database by using a concise Pandas lambda expression that replaces empty actor lists with a default ID, providing a quick data‑cleaning solution for Python developers.
This article presents a JMH‑based performance comparison of four popular Java JSON libraries—Gson, FastJson, Jackson, and Json‑lib—covering their Maven dependencies, utility wrappers, a realistic Person model, serialization and deserialization benchmarks, and analysis of the results to guide library selection.
This article presents a step‑by‑step guide to creating a real‑time data‑visualization dashboard using Echarts on the front end and a Java Web backend, covering requirement analysis, architecture design, environment setup, code structure, deployment, and how to obtain the source code.
This article explains the hidden pitfalls when converting Java Beans to Map objects—such as type loss and incorrect property names caused by JSON libraries, BeanUtils, and CGLIB—and demonstrates reliable solutions using Dubbo's PojoUtils with clear code examples and visual debugging screenshots.
This article explains how to use the form-create library to dynamically build, render, and validate JSON‑driven forms in Vue, covering the definition of form items, component rendering with conditional logic, and handling of data binding and validation rules.
Converting Java beans to maps often leads to type loss and incorrect property names due to JSON frameworks and BeanUtils behavior, and this article examines those pitfalls, demonstrates them with code examples, analyzes underlying Java introspection mechanisms, and presents a Dubbo‑based solution to reliably preserve types and property names.
JSON Hero is a lightweight web‑based tool that offers multiple views, automatic content preview, search, and sharing capabilities for JSON data, with easy installation via Git and npm, making it a handy utility for developers who frequently work with JSON.
This comprehensive guide explains MySQL's native JSON data type, its advantages over text storage, detailed CRUD operations, indexing strategies, migration from TEXT columns, the powerful Partial Updates feature, performance benchmarks, and a wide range of JSON functions with practical examples.
JSON Hero is a lightweight, web‑based JSON viewer that offers multiple visualizations, content previews, search, and easy sharing links, with straightforward installation via Git and npm, making JSON inspection and editing more intuitive for developers.
A real‑world story shows how an overlooked undefined value in a JSON payload caused a front‑end bug that nearly cost a developer his year‑end bonus, and explains the quirks of JSON.stringify together with practical fixes and a custom implementation.
The article surveys common Swift JSON decoding approaches—including manual Unbox, HandyJSON, Sourcery, built-in Codable and BetterCodable—highlights their strengths and weaknesses, then presents a custom NEJSONDecoder that adds default values, key mapping, type compatibility, tolerant error handling, and transformation support, with performance benchmarks.
This tutorial explains how to install and use the GsonFormat IntelliJ plugin to automatically generate JavaBean classes from JSON strings, dramatically reducing repetitive getter/setter code and improving backend development efficiency.
This article examines Fastjson2's performance compared to Fastjson, detailing environment setup, benchmark results, GC analysis, and a deep dive into the library's serialization and deserialization source code to explain why memory settings dramatically affect speed.
JSON Hero is a lightweight web‑based tool that provides multiple visualizations such as column, tree, and raw JSON views, along with editing, searching, and sharing features, and the article explains its purpose, installation steps, usage, and key capabilities.
This tutorial explains how to set up Fiddler and mitmproxy to intercept Douyin traffic, automatically save JSON responses using custom scripts, and then parse and store the extracted user information in CSV files with Python, providing step‑by‑step instructions and code examples.
A real‑world story shows how a developer’s incorrect use of JSON.stringify caused a missing form field, broke a page, and nearly cost a year‑end bonus, followed by a detailed explanation of JSON.stringify’s quirks and a robust fix to prevent the issue.
This article recounts a developer's step‑by‑step investigation of an intermittent Fastjson generic‑type parsing error in a Java backend, detailing the initial symptom, debugging process, code examples, discovery of Fastjson’s cached generic handling bug, and the resolution by upgrading to version 1.2.33.
This article introduces JsonPath as a DSL for reading JSON data in Java, demonstrates Maven integration, provides code examples for extracting and renaming JSON fields, and mentions the jq command‑line tool for additional JSON manipulation.
This article introduces nine essential JSON tools—including online validators, CLI utilities, and IDE plugins—explaining their key features, how to access them, and why they help developers quickly validate, format, compare, and transform JSON data efficiently.
This article presents a step-by-step guide to building a full-screen dashboard for LED displays, detailing requirement analysis, deployment options, overall architecture, key front‑end HTML/CSS layout, Echarts visualizations, back‑end Java REST API, JSON data handling, and configuration instructions.
This article explains how different data models—from relational tables to JSON documents and graph structures—affect software design, storage, querying, and scalability, illustrating concepts with a resume example and discussing trade‑offs such as impedance mismatch, normalization, and multi‑entity relationships.
This article explains why processing JSON in a statically‑typed language like Go can be cumbersome, demonstrates two basic approaches—using map[string]interface{} and struct tags—highlights their limitations, and introduces third‑party libraries such as SJSON and GJSON that make JSON reading and writing more concise and efficient.
The article benchmarks cjson, rapidjson, and yyjson JSON libraries on a 6‑core OpenResty setup, shows that combining rapidjson's encode with yyjson's decode reduces 500,000 mixed encode/decode operations to 11 seconds, and describes a Lua wrapper that adds schema validation and improves maintainability.
This guide shows how to store automated test data in JSON files within the resources folder, read and parse them using FastJSON and Hutool, and also retrieve configuration values from application.properties via ResourceBundle, providing reusable Java utility classes.
This article introduces nine popular tools—including JSONLint, JSONCompare, JTC, ijson, and others—that help developers validate, format, compress, compare, and edit JSON data, providing both online services and IDE plugins for more efficient JSON handling.
Swagger’s poor JSON handling can hinder API testing, but two sleek visualization tools—JsonHero and JsonVisio—offer formatting, editing, tree views, and easy installation, enabling developers to efficiently view and manipulate JSON data directly from Swagger or standalone.
This article chronicles a puzzling Fastjson bug that manifested intermittently in production, detailing the investigation steps, code examples, and the eventual discovery that an early Fastjson version mishandled generic type caching, which was fixed by upgrading the library.
On May 14 the open‑source Fastjson library launched version 2.0.3, adding better compatibility with its 1.x line, native support for JDK 14 records, GraalVM native‑image compatibility, an improved extension mechanism, stronger JSONPath capabilities, Jackson annotation compatibility, and faster deserialization for heavily escaped JSON data.
The article presents a Filament‑based PBR material editor that unifies PC and mobile workflows by providing real‑time ImGui previews, JSON‑driven persistence, model optimization, texture compression, and export/import of mobile‑ready material packages, thereby lowering authoring barriers, accelerating iteration, and ensuring visual consistency across platforms.
This guide explains how to use the JavaScript Fetch API for sending and receiving JSON data, covering basic fetch calls, configuring GET requests with headers, handling responses, and performing POST (or PUT/PATCH) operations with proper content-type settings, plus a note on polyfills.
The study compares MaxCompute JSON extraction functions—FROM_JSON, get_json_object, and custom JMESPath/JSONPath UDFs—showing simple field extraction with get_json_object is fastest, while complex queries benefit from FROM_JSON or JMESPath, and outlines corresponding JSON generation methods and best‑practice recommendations.
This article introduces FastJSON 2.0, explains how to add the Maven dependency, outlines the main classes and methods for JSON, JSONB, and JSONPath, and provides code examples for serializing and deserializing Java objects as well as partial parsing with JSONPath.
This guide walks through designing a layout, configuring a Change node, creating a JSON payload, crafting an HTML template with Handlebars, deploying the flow, and accessing the generated page at http://127.0.0.1:1880/data, all within Node-RED.
This article explains why storing JSON strings in Redis is inefficient, compares JSON with binary‑safe formats like MessagePack, evaluates compression algorithms such as ZSTD and LZ4, and provides Python examples showing how to reduce latency and memory usage when using Redis strings.
This article revisits RESTful API design using Go Web, covering twelve practical guidelines such as JSON usage, verb‑free and pluralized paths, hierarchical resources, pagination, unified response formats, proper HTTP status codes, versioning, HTTPS, and documentation to help developers build clear, consistent, and secure APIs.
