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ExternalSoftware Engineering
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Gitcard Weekly Challenge #1: Build Something That Solves an Everyday Problem

Developers, builders, and makers — welcome to the first Gitcard Weekly Challenge. GitCard: https://gitcard.io This week's challenge is simple: Build a small application, tool, website, API, automation, or AI project that solves an annoying everyday problem. It can be something that saves time, automates a repetitive task, helps people make better decisions, improves productivity, or simply makes life easier. Your project does not need to be huge. A small project that solves one problem really w

webdevprogrammingopensource
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ExternalSoftware Engineering
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Upgrade your Test Suite with fn-monitor

Modern JavaScript testing focuses heavily on testing public outputs and user behavior rather than chasing line-by-line or branch-by-branch coverage. This is because tests that check final outputs survive when you rewrite internal logic or change how a loop works, and they already catch the majority of regressions. Despite this, if you write complex financial calculations, security rules, or state machines where an unhandled condition cannot be tolerated, then a green test on the final value is n

javascripttypescripttesting
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ExternalSoftware Engineering
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The Whole Loop, One Window

I've spent years working with Git. Not just using it, but living in it. Feature branches, code reviews, releases, hotfixes, open source, side projects, client work—the rhythm becomes second nature. And yet, over time, I noticed something strange. The moment I needed to do anything beyond committing code, I was expected to leave. Leave the Git client to create a pull request. Leave it to review changes. Leave it to check project traffic. Leave it to manage branches. Leave it to use AI. Leave it t

opensourcegitai
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ExternalSoftware Engineering
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Single-flight caching: how one hot key stops taking the database down

On podbor-minuta.ru some database queries are heavy, so we keep their results in a cache: apartment lists, aggregate numbers for listing pages. While the value is in the cache, everything is fast. The trouble starts the moment it expires. One day under load we saw a batch of 500 responses timing out. The database was alive, but queries to it suddenly queued up and hit the connection limit. The answer was in how we refreshed the cache. The logic was naive: if the value is not in the cache, go to

performancepostgreswebdev
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ExternalSoftware Engineering
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Single-flight кэш: как один горячий ключ не роняет базу

На podbor-minuta.ru есть тяжёлые запросы к базе, результат которых мы держим в кэше: списки квартир, сводные цифры по подборкам. Пока значение в кэше есть, всё быстро. Проблема начинается в момент, когда оно протухает. Однажды под нагрузкой мы увидели пачку ответов с ошибкой 500 по таймауту. База при этом была жива, но запросы к ней вдруг встали в очередь и упёрлись в лимит соединений. Разгадка оказалась в том, как мы обновляли кэш. Логика была наивная: если значения в кэше нет, идём в базу, счи

performancepostgreswebdev
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ExternalSoftware Engineering
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How to build a Polymarket trading bot (50ms delay edition)

Polymarket just cut the taker delay from 250ms to 50ms Here’s how to build a bot that actually works under the newest rules On August 17, 2026 at 11:00 AM UTC, Polymarket reduced the taker delay on crypto markets from 250ms to 50ms. Official announcement from @PolymarketDevs. This is the latest in a series of changes: February 18, 2026: the original 500ms taker delay was quietly removed. Mid-2026: a 250ms delay was in effect (with order-locking rules added in June to stop cancel-during-delay gam

polymarkethowtoprofits
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ExternalSoftware Engineering
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AI Agents Don’t Need More Context. They Need Memory.

We keep making AI models better at reasoning. We give them larger context windows. We connect them to tools. We let them search files, browse repositories, call APIs, execute code, and operate increasingly complex workflows. And yet one problem keeps showing up: the agent forgets. Not necessarily because the model is bad. Because most agent systems still treat memory as an afterthought. I’ve been thinking about this problem for a while, and it eventually led me to start building BaseMyAI: a loca

aiprogrammingagents
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