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it unlocks many cool features!
- cpu, memory, disk, network slides!
- You don't know what the problem is until you measure it
- Always look for the easy wins
- Understand what's under your control
- Profile the application (memory usage, ...)
- Debug build vs. release build
- profile the cpu, disk io activity as well!
- only load if you need a file if need it!
- reads are faster than writes
- write in big chunks of buffers (64-256 kB)
- minimize network latency
- combine multiple requests to one
- compress assets, if required
- collection types beyond basic arrays and dictionaries
- caching for web apps
- https://developers.google.com/speed/pagespeed/ or http://yslow.org/
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