The Garden 11
Every note, filterable by growth stage and topic. Some are still unwritten.
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last monthWelcome to the Garden
What this digital garden is and how to wander it.
- Seedling last month
Spaced Repetition
Reviewing material at increasing intervals to fight forgetting.
- Budding 11 months ago
CPU-bound vs IO-bound
Whether your program spends its time computing or waiting decides your concurrency model - and quietly picks the language that will feel effortless.
- Evergreen last year
Rate limiting as an invariant
A rate limit reads like a restriction from outside and like a promise from inside - the invariant that keeps a system in a regime where it still works.
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Evergreen last yearQueues Are Everywhere
A queue decouples a producer from a consumer so they need not move at the same speed. Most of the queues in a system are the ones nobody drew on the diagram.
- Seedling last year
Retries and idempotency
Retries are only safe when the operation is idempotent - otherwise you get duplicate records or double charges.
- Seedling last year
Why APIs break
Breaking changes usually trace back to versioning, contracts, and team coordination - not just code.
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Evergreen last yearCaching Isn't Cheating
Caching gets dismissed as a hack, but it is one of the oldest principled moves in computing - spending space, and a little staleness, to buy time.
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Evergreen 2 years agoTail latency: the number the average hides
The average request looks fine while the slowest one percent decides your reputation. Why tails happen, and how to defend them.
- Evergreen 2 years ago
Latency vs Throughput vs IOPS: why your fast API still fails at scale
Three performance numbers people blur together - and how the workload decides which one you should be optimizing.
- Budding
Performance & Latency MOC
A map of the performance notes - how to measure speed, the mechanisms that create it, and how to keep it under load.
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