KV locks for Workers cron jobs will silently fail — here's what I use instead

<h2> The problem </h2> <p>We had a nightly billing-reconciliation job that was only supposed to run once. To enforce that across three worker instances, we did the standard thing:

<p>The first wall you hit scheduling work on Cloudflare Workers is the free plan's <strong>cron trigger cap: five per account</strong>. Cut one cron per purpose in a single

<p>I've been building Finterm, a financial terminal<br /> that runs entirely in a browser tab, on Cloudflare<br /> Workers via <code>@opennextjs/cloudflare</code>. The promise<br

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<p>A 3600-second presigned URL expiring after 38 minutes isn't a permissions bug. It's a clock skew bug — and it took me an NTP issue on my dev laptop to finally see it

<p>The thing that breaks before 1,000 users is almost never the code.</p> <p>Not a race condition. Not a memory leak. Not a missing index. Founders assume their app will collapse

<p>Adding a 7th subagent pushed my orchestrator latency from 22s to 31s — the opposite of what I expected.</p> <p>I'd been running a fanout pattern in my ad-creative analysis

<p>When a customer-support system retries outbound webhooks, the cleanup job is easy to underestimate. A nightly delete of old delivery records may fit in one request today and