Fix cyclic dependency between clients and sub clients#2858
Uh oh!
There was an error while loading. Please reload this page.
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
While the Python GC can handle those dependencies, it can cause latency spikes when .option() is used for each query, which causes many clients to be garbage collected, which can be slower in the presence of cycles.
pquentinforce-pushed the cyclic-dependency branch from 071563d to e6c68bbCompare
MemberAuthor
pquentin commented Mar 24, 2025
Thank you for the review! So it looked nice with 14 changed lines, but it did not work. :) |
Sign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
While the Python GC can handle those dependencies, it can cause latency spikes when .option() is used for each query, which causes many clients to be garbage collected, which can be slower in the presence of cycles.
https://github.com/python/cpython/blob/main/InternalDocs/garbage_collector.md
objgraph backrefs, before and after
Namespaced sub clients reference back to the main client:
No backreferences:
10 000 calls to client.options().info(), before and after
Calling
options()in a loop is 15% faster on average, and 2x faster for P100.