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Making an AB Test Allocator 20x Faster Using Non-blocking IO
Many moons ago, I inherited a cross-company AB test and had to figure out how to allocate it effectively.
Oct 30
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Matthew Hawthorne
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Making an AB Test Allocator 20x Faster Using Non-blocking IO
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How Would You Design Amazon S3?
One of my favorite system design questions from a few years ago and a fascinating thing I learned while answering it.
Oct 1
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Matthew Hawthorne
5
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How Would You Design Amazon S3?
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September 2024
One Key Aspect of Optimizing Computational Throughput
When optimizing throughput, think carefully about how many CPUs you have when adding threads or processes.
Sep 18
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Matthew Hawthorne
1
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One Key Aspect of Optimizing Computational Throughput
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4 Ways To Say No, Elegantly and Effectively
In my early days at Netflix, my inability to say no led me into unpleasant terrain. Here's how I evolved to navigate these situations more fluidly.
Sep 4
•
Matthew Hawthorne
3
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4 Ways To Say No, Elegantly and Effectively
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August 2024
How We Built a Self-Healing System to Survive a Terrifying Concurrency Bug At Netflix
Our CPUs were dying, the bug was temporarily un-fixable, and we had no viable path forward. Here's how we managed to survive.
Aug 27
•
Matthew Hawthorne
36
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How We Built a Self-Healing System to Survive a Terrifying Concurrency Bug At Netflix
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When Things Are Slow, Look for Queues
When your system is slower than desired, queues are often heavily involved. Here's an overview of the most common situations.
Aug 13
•
Matthew Hawthorne
9
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When Things Are Slow, Look for Queues
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When Overwhelmed, Make a List of Questions
In my first big project at Netflix, I learned this disturbingly simple problem-solving technique.
Aug 5
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Matthew Hawthorne
2
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When Overwhelmed, Make a List of Questions
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July 2024
Metrics Are The Map, Not The Territory
We can never obtain a complete and perfect understanding of what our systems are doing. All we have are incomplete signals to inform our theories.
Jul 30
•
Matthew Hawthorne
4
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Metrics Are The Map, Not The Territory
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Comprehension of Concurrency is a Lifelong Journey
Accept that your understanding is imperfect. There is comfort in letting go.
Jul 23
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Matthew Hawthorne
2
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Comprehension of Concurrency is a Lifelong Journey
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