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The Coder Cafe

Teiva Harsanyi

AI is getting better every day. Are you? At The Coder Cafe, we serve fundamental concepts to make you an engineer that AI won't replace. Written by a Google SWE, trusted by thousands of engineers worldwide.

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Substack
PricingOnly free issuesPublishesWeekly
Issues122Founded2 years agoLast Issue7 days ago
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Latest Issues

LSM Trees Explained

☕ Welcome to The Coder Cafe! Some people reached out after I published the Build Your Own Key-Value Storage Engine series to say they hadn’t gone through all eight posts, but they were curious about the core ideas. So I distilled everything...

7 days ago
7

AI for Production

☕ Welcome to The Coder Cafe! These days, most posts about AI for production circle the same ideas: automated remediation, anomaly detection, alerting triage, etc. These are interesting starting points, but they share a common assumption: th...

14 days ago
7

Cache Use Cases Explained

☕ Welcome to The Coder Cafe! Today, we discuss cache use cases. When we think about caching, it’s pretty frequent to focus on where it happens; for example, client-side, server-side, or in a CDN. Yet, there’s a more important question that...

21 days ago
12
1

How Linux 7.0 Broke PostgreSQL

☕ Welcome to The Coder Cafe! On April 3, 2026, Salvatore Dipietro, an engineer at AWS, posted a patch to the Linux kernel mailing list. The reason: on a 96-vCPU Graviton4 machine running Linux 7.0, PostgreSQL throughput had dropped to rough...

a month ago
26
3

The Reading Room is Open

We’re launching something new: The Reading Room, a book club right here in The Coder Cafe community.

We’re kicking things off with one of my all-time favorite technical book: Designing Data-Intensive Applications, since the second edition...

a month ago

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  • Teiva Harsanyi

    Software Engineer at Google, Author, Speaker.

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