Developer Blog
Practical guides on web security, authentication, encoding, and developer tools. Every article is written with working code examples and real-world context β not just theory.
Security
2FA, JWT, hashing, passwords
Encoding
Base64, URL, HTML entities
Dev Tools
Regex, JSON, cron, UUID
All Articles β 12 guides
Unix Timestamps for Web Developers: A Complete Reference
Everything web developers need to know about Unix timestamps β what epoch time is, how to convert timestamps in JavaScript, Python, and Go, common pitfalls like the milliseconds trap, and how to handle timezones correctly.
UUID vs ULID vs Nano ID: Choosing the Right Unique Identifier
UUIDs are universal but unordered. ULIDs are sortable by time. Nano IDs are compact and URL-safe. This guide compares all three so you can make the right choice for your database, API, or distributed system.
Cron Expressions Explained: The Complete Guide to Task Scheduling
Cron syntax looks intimidating at first. This guide breaks down every field, special character, and common pattern so you can confidently schedule tasks in Linux, Docker, Kubernetes, and cloud schedulers.
JSON Best Practices: Formatting, Validation, and Common Pitfalls
JSON is the lingua franca of modern APIs β but subtle formatting errors, security issues, and schema mismatches cause real problems. This guide covers the best practices every developer should know.
Regular Expressions for Developers: From Basics to Real-World Patterns
A practical guide to regular expressions β character classes, quantifiers, groups, lookaheads, and the most useful regex patterns for validating emails, URLs, dates, and more.
2FA Methods Compared: SMS, Authenticator Apps, and Hardware Keys
Not all two-factor authentication is equal. SMS 2FA is vulnerable to SIM swapping. TOTP apps offer strong protection. Hardware keys are nearly unphishable. Here's how to choose for your use case.
Base64 Encoding Demystified: How It Works and When to Use It
Base64 is everywhere β email attachments, data URIs, JWT tokens, API payloads. This guide explains exactly how Base64 encoding works, its variants, and the common misconception that it's a form of encryption.
How to Generate Cryptographically Secure Passwords: A Technical Deep Dive
Math.random() is not cryptographically secure. Learn how browser-native crypto.getRandomValues() works, how password entropy is calculated, and what makes a password generation algorithm truly safe.
SHA-256 vs bcrypt: Which Hashing Algorithm Should You Use for Passwords?
SHA-256 is fast β and that's exactly why it's wrong for password hashing. Learn why bcrypt, Argon2, and scrypt exist, how they differ, and how to choose the right algorithm for your use case.
JWT Security Best Practices: A Developer's Guide to Safe Token Handling
JSON Web Tokens are powerful but easy to misuse. This guide covers the most critical JWT security mistakes β algorithm confusion, insecure storage, missing expiration β and how to fix them.
What Is TOTP? A Complete Developer's Guide to Time-Based One-Time Passwords
Learn how TOTP (Time-Based One-Time Password) works under the hood β including the RFC 6238 algorithm, secret keys, time windows, and how to implement 2FA securely in your own application.
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