# Reasons that trigger precompilation?

**URL:** <https://discourse.julialang.org/t/reasons-that-trigger-precompilation/82625>\
**Category:** General Usage\
**Tags:** precompilation\
**Created:** [June 12, 2022, 8:33am UTC](https://discourse.julialang.org/t/reasons-that-trigger-precompilation/82625 "2022-06-12T08:33:43Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![cdawg](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/cdawg/32/9811_2.png) [@cdawg](https://discourse.julialang.org/u/cdawg)\
**Post date:** [June 17, 2022, 9:33am UTC](https://discourse.julialang.org/t/reasons-that-trigger-precompilation/82625/2 "2022-06-17T09:33:34Z")

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I came looking for this question as well. I read [here](https://discourse.julialang.org/t/precompile-why/78770) that recompilation happens when methods are at risk of being invalidated (or julia version changes). So I guess maybe a more direct question is “How do I make sure that a big project or notebook never (or rarely) has invalidated methods?”

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_[View the full topic](https://discourse.julialang.org/t/reasons-that-trigger-precompilation/82625)._