Every new APEX release can introduce new APEXlang components, new options for existing properties, and changes to file structure. When uptaking a new APEX release, it’s important to upgrade existing APEXlang apps to the new release’s APEXlang format. This article…
Available · Senior full-time · Remote-first Pakistan · UTC+5 · Issue 01 Blind retries double-send emails and double-charge customers. The BullMQ setup I run in NestJS: jittered backoff, idempotent jobs, and a dead-letter queue. Install two packages and register one module. BullMQ is the queue…
I have watched the same failure play out in real-time features more than once. One server, one room, everything works. You add a second instance behind a load balancer to handle more connections, and half your users stop receiving messages.
The Redis exporter presents Redis metrics to Prometheus. Port 9121 is a common default. A port match can be an exporter, a development service, or an unrelated listener. The exporter's value comes from a configured connection to Redis, which may carry…
The Bitrix24 REST API looks simple on day one. You create an inbound webhook, call crm.deal.list, get JSON back and the prototype works. The trouble starts on the first bulk sync, when a few thousand records need to move…
This article was written with the assistance of AI, under human supervision and review. Developers write try/catch blocks around TypeScript functions without knowing what exceptions those functions throw. The compiler stays silent when a function that throws NetworkError gets…
The recent investigation into an on-field medical incident reminds us that some failures demand immediate, thorough response protocols. While the context is sports medicine, the operational lesson applies directly to fintech and payment systems: when a critical transaction or event…
This article was written with the assistance of AI, under human supervision and review. The global scope remains the path of least resistance for quick hacks. Developers drop variables onto globalThis to share state across modules, expose debug hooks to…
This article was written with the assistance of AI, under human supervision and review. Function overload problem — compiler picks wrong signature Function overload solution — correct signature selection The example above works because the compiler checks parse('hello') against the first…
The feature was simple: let someone export a report and share it as a single link, PDF baked right in as a data URL. Worked first try. Worked in the demo. Worked for two weeks in production. Then someone exported…
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