DevToolBox Blog

Developer guides, tutorials, and best practices for working with online tools

2026-02-08|10 min read

UUID v4 vs UUID v7 vs ULID vs NanoID: Which ID Should You Use?

A comprehensive comparison of UUID v4, UUID v7, ULID, and NanoID for database primary keys, distributed systems, and frontend applications. Includes performance benchmarks and a decision flowchart.

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2026-02-08|9 min read

Cron Schedule for Serverless: GitHub Actions, Vercel Cron, and Cloudflare Workers

Master cron expressions across serverless platforms. Learn syntax differences, timezone pitfalls, and copy-paste schedule examples for GitHub Actions, Vercel, and Cloudflare Workers.

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2026-02-08|8 min read

Base64 Encoding in Practice: 7 Real-World Uses Every Developer Should Know

Discover 7 practical uses of Base64 encoding: from embedding images in HTML to Kubernetes secrets, JWT tokens, and data URIs. With code examples and live tools.

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2026-02-08|11 min read

20 Regex Patterns Every Developer Needs: Copy-Paste Ready Examples

A curated collection of 20 battle-tested regex patterns for email, URL, phone, password, IP address, and more. Each pattern includes explanation, test cases, and a live regex tester link.

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2026-02-08|9 min read

Docker Compose YAML Validation: 10 Common Syntax Errors and How to Fix Them

Stop wasting time on Docker Compose YAML errors. Learn to identify and fix the 10 most common syntax mistakes with exact error messages and solutions.

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