How To Make Your Python App Feel Instant

How To Make Your Python App Feel Instant | Issue #82

Published about 2 months ago • 1 min read

Have you ever written a Python script that felt slow, even though the logic was simple?

Sometimes it’s not the efficiency of your code that's the problem, it’s when your code does its work.

This week’s video is all about the Lazy Loading design pattern, and I think many developers underestimate how powerful (and practical) it is. I start with a real example: loading a huge CSV file that freezes your program for 10 seconds before doing anything useful. Then, step by step, we improve it using:

Lazy loading to delay expensive work
Generators to stream data instead of loading everything
Caching to avoid doing the same expensive work twice
A time-limited cache to handle changing external data
And finally, background preloading to get the best of both worlds

Hope you enjoy this video and, as always, wish you a great weekend.

Cheers,

Arjan

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