JWT expired? How to debug 401 errors in five minutes
Decode access tokens, read exp claims, and fix clock skew without guessing your auth stack.
2026-06-13 · 5 min read · Rahul Chitturi
Blog
Tips, workflows, and stories about developer productivity, API debugging, documentation, and building Flashman. Every post links to free tools you can use right away.
23 articles · looking for tutorials? See our guides.
Five Base64 mistakes that break API integrations
Padding, Unicode, URL-safe variants, and double encoding—fixed before your next deploy.
2026-06-13 · 5 min read · Rahul Chitturi
Pretty-print JSON without opening your IDE
Format API responses during calls, in tickets, and on machines where VS Code is not installed.
2026-06-12 · 4 min read · Rahul Chitturi
Cron jobs in production: a pre-deploy checklist
Timezone, daylight saving, overlap, and idempotency—before your nightly job runs twice.
2026-06-12 · 6 min read · Rahul Chitturi
How URL encoding breaks analytics and deep links
UTM parameters, plus signs, and double encoding—why your campaign reports look wrong.
2026-06-11 · 5 min read · Rahul Chitturi
Markdown for internal docs: what engineering teams get right
Structure, preview, and PDF export for runbooks, RFCs, and onboarding without a heavy wiki.
2026-06-11 · 5 min read · Rahul Chitturi
Using SHA checksums in CI pipelines
Verify artifacts, cache keys, and config drift with hashes—without misunderstanding what they prove.
2026-06-10 · 5 min read · Rahul Chitturi
QR codes for DevRel: events, demos, and feedback links
Encode staging URLs, slides, and surveys—without printing broken links.
2026-06-10 · 4 min read · Rahul Chitturi
XML and SOAP debugging: a quick start for JSON developers
Pretty-print legacy payloads, spot namespace issues, and survive enterprise integrations.
2026-06-09 · 5 min read · Rahul Chitturi
Diff-driven review: compare configs before you approve
Line diffs for env files, JSON policies, and SQL migrations—catch typos reviewers miss.
2026-06-09 · 4 min read · Rahul Chitturi
Format messy SQL during incident response
Beautify ORM-generated queries from logs so on-call can read them under pressure.
2026-06-08 · 4 min read · Rahul Chitturi
Color tokens: surviving the design-to-CSS handoff
Convert HEX to RGB, document contrast, and stop the #3B82F6 telephone game.
2026-06-08 · 5 min read · Rahul Chitturi
Starter regex patterns for parsing application logs
Extract request IDs, status codes, and durations—then cap input length.
2026-06-07 · 6 min read · Rahul Chitturi
API naming wars: snake_case vs camelCase at the boundary
Convert field names when Python backends meet TypeScript frontends.
2026-06-07 · 4 min read · Rahul Chitturi
KB vs KiB: why your bandwidth math is wrong
Decimal SI units vs binary IEC units—and how to convert without embarrassing estimates.
2026-06-06 · 4 min read · Rahul Chitturi
10 browser tools developers use every day
JSON formatters, JWT decoders, and encoders save hours—here is how to build a fast daily workflow without leaving the browser.
2026-06-01 · 6 min read · Rahul Chitturi
JSON API debugging checklist for faster incidents
A step-by-step checklist when an API returns unexpected data—structure, types, encoding, and time.
2026-05-30 · 7 min read · Rahul Chitturi
README best practices that actually get read
Structure your open-source and internal README files so newcomers ship on day one.
2026-05-28 · 5 min read · Rahul Chitturi
Securing secrets during development (without paranoia)
Practical habits for tokens, env files, and clipboard hygiene on shared machines.
2026-05-26 · 6 min read · Rahul Chitturi
Why we built Flashman to run entirely in your browser
The product philosophy behind client-side developer tools—and what we will never do with your data.
2026-05-22 · 5 min read · Rahul Chitturi
Kubernetes YAML tips every developer should know
Avoid footguns in manifests—indentation, multi-doc files, and JSON conversions.
2026-05-20 · 6 min read · Rahul Chitturi
From spreadsheet exports to JSON pipelines
Clean CSV and Excel exports before they become API payloads or MATLAB calibrations.
2026-05-18 · 5 min read · Rahul Chitturi
Browser tools vs CLI: when each wins
jq and curl are powerful—but sometimes a paste-and-go web tool is the right answer.
2026-05-15 · 5 min read · Rahul Chitturi