Rate Limiting at the CDN Edge
Implementing rate limiting at the CDN edge for public-facing services, covering algorithms and practical trade-offs.
Posts tagged performance
Guide to Concurrency in Python with Asyncio
A guide to Python's asyncio module covering async/await, event loops, tasks, and when to use asyncio vs threading or multiprocessing.
HTTP Caching Guide
A practical guide to HTTP caching covering Cache-Control, Surrogate-Control, and caching strategies at client and proxy layers.
Calculating Big-O
A quick reference for calculating Big O time complexity by identifying dominant operations in an algorithm.
Algorithmic Complexity in Python
An introduction to Big O notation and algorithmic time complexity with Python examples for common operations.
Statistics and Graphs: The Basics
A beginner-friendly introduction to statistics covering data types, frequency, averages, distributions, and graph visualisation.
NSQ Queue Reader Best Practices
Practical guidelines for building performant and reliable NSQ queue reader services in Python.
Observability and Monitoring Best Practices
Best practices for application monitoring covering metrics, alerting strategies, data aggregation, and graph selection.
Load Testing Guidelines
A concise set of guidelines for running effective load tests, covering real datasets, traffic distribution, and tooling.
Fastly Varnish
A deep dive into how Fastly's CDN works, covering Varnish internals, clustering, shielding, and edge programming gotchas.
Profiling Python
Techniques and tools for profiling Python applications including timers, cProfile, line_profiler, memory_profiler, and pyflame.
Profiling Go
Techniques and tools for profiling Go applications including pprof, benchmarks, and memory management analysis.
Big O for Beginners
A gentle introduction to Big O notation covering logarithms, factorials, and how to reason about algorithm growth rates.
HTTP/2
A quick introduction to HTTP/2 covering persistent connections, multiplexing, header compression, and server push.
Designing for Simplicity
Lessons from building high-traffic systems at BBC News on complexity, caching, automation, and keeping software simple.