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Improve script caching behavior #4471
Description
Prerequisites
- I have written a descriptive issue title
- I have searched issues to ensure it has not already been reported
Cake runner
Cake .NET Tool
Cake version
latest
Operating system
Windows
Operating system architecture
x64
CI Server
N/A
What are you seeing?
We see script caching not working as we hoped. For example:
Run (according to build system): 39 seconds, but Cake logs show:
Task Duration
--------------------------------------------------
Setup 00:00:00.2121813
Prepare 00:00:00.2494064
UpdateNuGet 00:00:00.0003786
RestorePackages 00:00:05.8670747
Deploy 00:00:01.2517940
--------------------------------------------------
Total: 00:00:07.5808350
So theoretically 32 seconds can be shaved off.
I am currently adding logging to the script compilation (although this is on a much faster machine):
Without cache file:
Compilation took '00:00:01.5861141'
With cache file:
Loading script assembly from cache took '00:00:00.0036443'
I think this would be a nice addition to always log to the output window (I think people want to see this).
Will add more tracings and update this ticket.
What is expected?
N/A
Steps to Reproduce
N/A
Output log
No response
Activity
GeertvanHorrik commentedon May 15, 2025
Added some more timings:
GeertvanHorrik commentedon May 15, 2025
I think I found a useful pointer why caching is not working. The contents contain full path names:
But... on (most) build agents, it will be a random, unique directory:
I think using simplified paths for script cache comparison could work here, doing some additional testing.
(cake-buildGH-4471) Improve script cache hash generation algorithm
gep13 commentedon May 20, 2025
@GeertvanHorrik just to make sure that I have understood this correctly...
Are you saying that you are using the build script cache, across different build agents? Which is why you are seeing the path to the scripts be different in each case? How are you keeping the build script cache "alive" between build executions? Are you using some sort of caching at the build agent level?
Just want to make sure that I am understanding the need for the change here.
GeertvanHorrik commentedon May 20, 2025
No, not different build agents. Different builds, where the build agent assigns a different folder (unique to the build) every time. This is to introduce caching on the build agent level (or, for that matter, even on local builds since we use exactly the same scripts to do local nuget packags on dev machines).
gep13 commentedon May 20, 2025
Gotcha! Thank you for the clarification, this helps!
(cake-buildGH-4471) Improve script cache hash generation algorithm
github-actions commentedon Oct 4, 2025
ð This issue has been resolved in version v5.1.0 ð
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