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The Firebase Auth bug that took me 3 days to find (it wasn't Firebase's fault)

The Firebase Auth bug that took me 3 days to find (it wasn't Firebase's fault)

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2 min read
Designing Real-Time Bi-Directional APIs: WebSockets vs. SSE vs. gRPC-Web

Designing Real-Time Bi-Directional APIs: WebSockets vs. SSE vs. gRPC-Web

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15 min read
Why Webhook Signature Verification Fails: Raw Body, Wrong Secret, Clock Skew, Proxies

Why Webhook Signature Verification Fails: Raw Body, Wrong Secret, Clock Skew, Proxies

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7 min read
[quick-revisit]: MongoDB Indexes & B-Trees

[quick-revisit]: MongoDB Indexes & B-Trees

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3 min read
Your JWT Is Not Encrypted - Here's What's Actually Inside It

Your JWT Is Not Encrypted - Here's What's Actually Inside It

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2 min read
Your Error Messages Are a Feature: What a "Random Logout" Bug Taught Me About Designing for Failure

Your Error Messages Are a Feature: What a "Random Logout" Bug Taught Me About Designing for Failure

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5 min read
Why the OpenTelemetry browser SDK wouldn't start on Safari 17

Why the OpenTelemetry browser SDK wouldn't start on Safari 17

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2 min read
How to Build a Deep Research Agent in Python with Web Search and Extract

How to Build a Deep Research Agent in Python with Web Search and Extract

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10 min read
Why your z-index doesn't work: my debugger now points to the exact line

Why your z-index doesn't work: my debugger now points to the exact line

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2 min read
Your Next.js build should not need your database

Your Next.js build should not need your database

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5 min read
Prompt Injection Is the New SQL Injection (and We're Not Ready)

Compares structural flaws to SQLi

Prompt Injection Is the New SQL Injection (and We're Not Ready)

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7 min read
Building a quiz result page that refuses to be one label

Building a quiz result page that refuses to be one label

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2 min read
The API Worked. The Architecture Didn’t.

The API Worked. The Architecture Didn’t.

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6 min read
Claude Code doesn't need a better prompt. It needs a desk

Claude Code doesn't need a better prompt. It needs a desk

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2 min read
Skip is not zero: scoring a private quiz without a database

Skip is not zero: scoring a private quiz without a database

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4 min read
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