This guide explains what a Blob is, how to create it with JavaScript, generate and manage temporary Blob URLs, compare it with Base64 and ArrayBuffer, and apply best‑practice patterns for previewing, downloading, and streaming large files in modern web applications.
This article explains the challenges of frequent column changes in AI feature engineering, introduces Paimon’s column‑separation storage with a global continuous Row ID, details its Blob data type for efficient multi‑modal handling, and outlines production results and future roadmap for building an AI‑native data lakehouse.
This article provides a comprehensive guide to the Blob and File objects, their methods such as slice, text, arrayBuffer, and stream, explains Base64 encoding, demonstrates how to use URL.createObjectURL for previews, and introduces ArrayBuffer, TypedArray, and DataView for low‑level binary data handling in web development.
This article explains JavaScript's Blob and File objects, their creation syntax, properties, methods such as slice, text, arrayBuffer, and stream, and demonstrates common scenarios like file download, upload, image reading, and Base64 conversion with clear code examples.
This article analyzes a MySQL 5.7.20 crash that occurs during INSERT operations on BLOB columns with INSERT … ON DUPLICATE syntax, explains the underlying bug in the copy_blob_value function, shows how to reproduce and locate it with gdb, and provides the fix introduced in MySQL 5.7.22.
This article explains the concepts of File, Blob, ArrayBuffer, TypedArray, and DataView in JavaScript, covering their definitions, main usages, how to obtain files, common file operations such as slicing and previewing, and practical scenarios like large‑file uploads and video frame extraction.
This article investigates the true maximum length of MySQL VARCHAR columns, showing how charset byte size, NULLability, column count, and the InnoDB Dynamic row format together determine the effective limit, and explains how overflow is handled for very large strings.
This guide explains the characteristics of Base64 strings, Blob objects, and File objects in web development, shows how to detect each type in JavaScript, and provides conversion functions to transform between Base64, Blob, and File formats.
This article explains how JavaScript’s Blob, File, FileReader, ArrayBuffer, DataView, Object URL and Base64 APIs work together to create, slice, read, convert and display binary data in web applications, providing code examples for each operation and detailing their properties, methods, and typical use‑cases.
The article explains how to overcome the limitation of browser ES Modules by creating inline‑import functionality with Blob URLs and dynamic import maps, providing both dynamic and static import capabilities for modular JavaScript in playground‑style environments.
This article explains how JavaScript processes binary data for front‑end image handling, covering core APIs such as ArrayBuffer, TypedArray, DataView, Blob, File, and FileReader, and demonstrates practical techniques for previewing, downloading, converting, compressing, and detecting image formats using code examples.
This article walks through the inner workings of Git, explaining how initializing a repository creates the .git structure, how objects, blobs, and SHA‑1 hashes store file contents, the roles of the working directory, index, and commit objects, and how branches, HEAD, and remote connections operate together to manage version history.
This article presents a comprehensive technical analysis of cross‑platform web screen recording, covering strict business requirements, evaluation of rrweb, ffmpeg, and WebRTC solutions, detailed implementations for video and audio capture in Electron, handling of lock‑screen issues, WebM metadata fixes, memory‑usage constraints, and performance optimizations.
This guide explains how to create an Oracle table with a BLOB column, insert binary files from Python using cx_Oracle by binding a BLOB variable, and later read the stored BLOB back to a file, covering all required SQL and Python code.
The article explains how JavaScript handles binary data by using ArrayBuffer as raw memory, TypedArray and DataView as typed views for reading and writing with endianness control, and Blob for file‑like binary objects, detailing their constructors, methods, and typical use cases such as WebGL, file upload, and image display.
This article explains how to implement parallel downloading of large files in the browser by leveraging HTTP Range requests, the asyncPool concurrency‑control library, and auxiliary functions such as getContentLength, getBinaryContent, concatenate, and saveAs, complete with code examples and usage guidance.
This article explains what a Blob is, introduces the Blob Web API with its constructor, properties, and methods, and demonstrates practical scenarios such as chunked uploads, downloading data, creating Blob URLs, converting to Base64, image compression, PDF generation, and compares Blob with ArrayBuffer, providing complete code examples for each use case.
This article explains MySQL's large object data types—TEXT, BLOB, and JSON—covering their storage formats, performance implications, indexing rules, partition restrictions, relevant server parameters, and practical examples of creating tables, inserting data, and querying JSON values.
This article walks through Git's internal storage model using a concrete example, showing how blobs, trees, commits and tags are created, how the three Git areas (working directory, index, repository) interact, and why Git can efficiently track history while ensuring data integrity.
This article demonstrates how to store 5 MB images in MySQL using LONGBLOB, LONGTEXT, and VARCHAR columns, compares their disk usage, shows insertion scripts, and provides retrieval methods including a stored procedure for binary export, concluding that storing file paths is more efficient.
This article analyzes intermittent IO write spikes in a MySQL slave instance, tracing them to concurrent InnoDB tablespace extensions triggered by large BLOB inserts across thousands of tables, and proposes mitigation strategies.
This article explains the evolution and usage of Uint8Array, TypedArray, Buffer, and Blob in JavaScript, demonstrates how to convert between strings, ArrayBuffers, and binary data, and shows practical code examples for rendering PDFs and handling files in both browser and Node environments.
This article explains how to generate and download CSV files directly in the browser by converting JSON data into comma‑separated values, using the Blob API and the anchor element’s download attribute, and includes advanced techniques for custom headers and handling Excel formatting issues.
