A practical look at using tower as the middleware layer for Rust AWS Lambda functions, with examples that build up to a DynamoDB-backed per-IP rate limiter. It covers Service, Layer, stack ordering, short-circuiting, boxed async futures, and testing middleware without deploying a Lambda. Comments
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Testing Firefox Extensions with Playwright: End-to-End Testing Guide Extension testing is one of those things everyone knows they should do but few actually do. I've been using Playwright for end-to-end tests on the Weather & Clock Dashboard extension and it's changed how I think about extension quality. Unit tests don't cover the biggest failure modes: Does the extension actually load in Firefo
A hands-on dev review focused on i18n, date/number formatting, and non-ASCII edge cases. Why I Tested TestSprite for Locale Handling Specifically Most AI testing tools get reviewed for their core functionality — does it find bugs, does it write good test code, does it integrate with CI/CD. Those reviews exist. What I couldn't find was a focused review on how TestSprite handles locale-specific edge
Why I built another Ruby test runner inspired by Playwright Test Ruby already has great testing tools. If you are building Rails applications today, you probably use one of these combinations: RSpec + Capybara Minitest + Capybara Rails system tests Maybe Selenium, Cuprite, Ferrum, or Playwright through Ruby bindings These tools are mature, battle-tested, and widely used. So the natural question
I wanted to test my web app. That's it. A Next.js portfolio and a SaaS chat — run some accessibility checks, catch console errors, verify nothing's broken on mobile. The kind of thing you do before pushing to production. I opened Claude Code, connected Playwright MCP, typed "test the app" and watched it burn through tokens like there was no tomorrow. Then /compact fired at 18% text context. Then I