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The fundamental structures of a software system.

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What LLMs 'Know' That You Don't Know They Know: Stop Inventing Prompt DSLs and Ride 50 Years of Unix Pre-Training Gravity

Real utility execution beats text prompts

What LLMs 'Know' That You Don't Know They Know: Stop Inventing Prompt DSLs and Ride 50 Years of Unix Pre-Training Gravity

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22 min read
We deleted the ratio that made a seventh of our scans say Can't assess

We deleted the ratio that made a seventh of our scans say Can't assess

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5 min read
Two actors want the same reward row, and only the one that gets it back from the UPDATE may call Stripe

Two actors want the same reward row, and only the one that gets it back from the UPDATE may call Stripe

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6 min read
Four of our apps share no audience, and one hand-copied TypeScript file is what tells Google they share a publisher

Four of our apps share no audience, and one hand-copied TypeScript file is what tells Google they share a publisher

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5 min read
Eleven exits from one function, and the five that must not remember anything

Eleven exits from one function, and the five that must not remember anything

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5 min read
Your thresholds do not belong in constants

Your thresholds do not belong in constants

Comments 1
3 min read
Two switch statements with 688 cases, and the 52 folders that replaced them

Two switch statements with 688 cases, and the 52 folders that replaced them

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4 min read
Routing Is Not Failover: A Practical Multi-Provider LLM Pattern

Routing Is Not Failover: A Practical Multi-Provider LLM Pattern

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3 min read
Building a Dynamic Strategy Pattern in C# with Customer Tiers and Plugin Architecture

Building a Dynamic Strategy Pattern in C# with Customer Tiers and Plugin Architecture

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4 min read
Designing Dropbox: File Storage & Sync System Design

Designing Dropbox: File Storage & Sync System Design

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15 min read
Muse can act for you. Nothing outside Meta can check who it is.

Muse can act for you. Nothing outside Meta can check who it is.

Comments 1
3 min read
Building a Rule-Based Risk Engine: Automating AIS/TIS Tax Scrutiny in JavaScript

Building a Rule-Based Risk Engine: Automating AIS/TIS Tax Scrutiny in JavaScript

Comments 1
3 min read
Building a 3GPP-Compliant IMS Core on Kamailio: P-CSCF, I-CSCF, and S-CSCF for 4G and 5G

Building a 3GPP-Compliant IMS Core on Kamailio: P-CSCF, I-CSCF, and S-CSCF for 4G and 5G

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6 min read
Your Answer Cache Thinks Cancel and Do Not Cancel Are the Same Question

Your Answer Cache Thinks Cancel and Do Not Cancel Are the Same Question

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2 min read
Google Play Families policy: build checks for child-targeted apps

Google Play Families policy: build checks for child-targeted apps

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6 min read
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