What Is NDJSON? Newline-Delimited JSON Explained
By qc_admin
What is NDJSON? Learn how newline-delimited JSON streams records one per line, how it differs from a JSON array, its media type, and how to parse it safely.
Author: qc_admin
What Is a Byte Order Mark (BOM)?
By qc_admin
What is a byte order mark? Learn what the BOM is, its byte signatures in UTF-8/UTF-16/UTF-32, why it breaks JSON and PHP, and how to detect and remove it.
What Is a MIME Type? Media Types Explained
By qc_admin
What is a MIME type? A clear developer guide to media types, the Content-Type header, charset, +json suffixes, MIME sniffing, and common pitfalls.
XML vs JSON: Which to Use and When
By qc_admin
A fair comparison of XML and JSON: their data models, verbosity, schemas, and the real situations where each is the better choice.
What Is a UUID? Structure, Versions and Uses
By qc_admin
What a UUID is, how its 128 bits are laid out into the 8-4-4-4-12 form, what the version and variant fields mean, and where UUIDs fit best.
What Is HMAC and Why It Matters
By qc_admin
HMAC combines a hash function with a shared secret key to prove a message is authentic and unaltered. Here is how it works and where you meet it.
What Is a Cryptographic Hash Function?
By qc_admin
A cryptographic hash turns any input into a fixed-size fingerprint that is one-way and collision-resistant. The properties that matter and what they enable.
UTF-8 and Unicode Code Points, Demystified
By qc_admin
Unicode assigns every character a code point; UTF-8 encodes those code points as bytes. How the two layers fit together, with a worked encoding example.
The alg:none JWT Vulnerability, Explained
By qc_admin
The alg:none attack tricks a JWT verifier into accepting an unsigned token by trusting the header. Learn how it works and how to shut it down.
A Practical SQL Formatting Style Guide
By qc_admin
A practical style guide for readable SQL: keyword casing, indentation, where to break lines, comma placement, alias rules, and join clarity that hold up in review.