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The 37-minute Tuesday: anatomy of a cascading failure
23 July 2026 · Hexline

The 37-minute Tuesday: anatomy of a cascading failure

A retry storm, a shared connection pool, and the graph everyone screenshotted. What actually happened.

Your database index is a phone book, and other lies
16 July 2026 · Hexline

Your database index is a phone book, and other lies

The B-tree analogy everyone learns conceals the three behaviours that actually bite in production.

NTP: the protocol quietly holding up your alibi
9 July 2026 · Hexline

NTP: the protocol quietly holding up your alibi

Distributed systems agree on almost nothing — except, mostly, the time. Here's the 40-year-old reason.

Opinion: your microservices are a distributed monolith with extra steps
2 July 2026 · Hexline

Opinion: your microservices are a distributed monolith with extra steps

If you can't deploy one service without a meeting, you have re-invented the monolith over HTTP.

The cache invalidation joke is not a joke
25 June 2026 · Hexline

The cache invalidation joke is not a joke

'There are only two hard things…' — the punchline hides a real taxonomy worth learning.

Reading RFCs for fun (a defence)
18 June 2026 · Hexline

Reading RFCs for fun (a defence)

The originals are shorter, clearer and funnier than the blog posts about them.

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© 2026 Hexline · Software, dissected weekly · No AI-generated filler, ironically

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