#442 Understanding how Facebook disappeared from the internet

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Understanding how Facebook disappeared from the internet

Social media quickly burst into flames, reporting what our engineers rapidly confirmed too. Facebook and its affiliated services WhatsApp and Instagram were, in fact, all down. Their DNS names stopped resolving, and their infrastructure IPs were unreachable. It was as if someone had "pulled the cables" from their data centers all at once and disconnected them from the Internet.

Solving NP-hard puzzles with the oldest trick in the book

In this article, I will present a new puzzle game and demonstrate techniques I used to write a fast, practical solver for it. Topics covered will include breadth-first/A* search, memoization, optimization, and strategies specific to NP-hard and NP-complete puzzle games.

Tools to explore BGP

Yesterday there was a big Facebook outage caused by BGP. I’ve been vaguely interested in learning more about BGP for a long time, so I was reading a couple of articles.

How IBM lost the cloud

Insiders say that marketing missteps and duplicated development processes meant IBM Cloud was doomed from the start, and eight years after it attempted to launch its own public cloud the future of its effort is in dire straits.

12 questions on engineering culture

12 questions to get a sense of what a tech company is like at to work at, based on things most job postings do not mention.

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