langchain-ai/langgraph
1
0
Fork 0
mirror of https://github.com/langchain-ai/langgraph.git synced 2026-07-15 12:35:43 -04:00
Code Issues 314 Packages Projects Releases 17 Wiki Activity

[PR #6646] perf: remove importlib.metadata for faster version access #5191

New Issue
Closed
opened 2026-02-20 17:51:21 -05:00 by yindo · 0 comments
yindo commented 2026-02-20 17:51:21 -05:00
Owner
Copy Link
Copy Source

Original Pull Request: https://github.com/langchain-ai/langgraph/pull/6646

State: closed
Merged: No

Summary

Removes usage of importlib.metadata.version() which adds ~5ms to import time. Instead, uses hardcoded version strings.

  • libs/langgraph/langgraph/version.py: Hardcode version directly
  • libs/cli/langgraph_cli/version.py: Re-export from __init__.py
  • libs/checkpoint-postgres/.../base.py: Import from langgraph.version instead of importlib.metadata

Benchmark Results

Metric Before After
Import time ~5ms ~0.1ms
Improvement - 50x faster

Test Plan

  • make lint passes on all modified packages (langgraph, cli, checkpoint-postgres)
  • Version imports work correctly
  • Benchmark confirms performance improvement

Closes #5040

**Original Pull Request:** https://github.com/langchain-ai/langgraph/pull/6646 **State:** closed **Merged:** No --- ## Summary Removes usage of `importlib.metadata.version()` which adds ~5ms to import time. Instead, uses hardcoded version strings. - **libs/langgraph/langgraph/version.py**: Hardcode version directly - **libs/cli/langgraph_cli/version.py**: Re-export from `__init__.py` - **libs/checkpoint-postgres/.../base.py**: Import from `langgraph.version` instead of `importlib.metadata` ## Benchmark Results | Metric | Before | After | |--------|--------|-------| | Import time | ~5ms | ~0.1ms | | Improvement | - | **50x faster** | ## Test Plan - [x] `make lint` passes on all modified packages (langgraph, cli, checkpoint-postgres) - [x] Version imports work correctly - [x] Benchmark confirms performance improvement Closes #5040
yindo added the pull-request label 2026-02-20 17:51:21 -05:00
yindo closed this issue 2026-02-20 17:51:21 -05:00
Sign in to join this conversation.
No Branch/Tag Specified
Branches Tags
Labels
Clear labels
agents
awaiting author revision
bug
change
chat models
checkpointer
ci
code quality
code quality
dependencies
documentation
drawing
duplicate
enhancement
good first issue
help wanted
invalid
maintainer
meta
missing information
not maintained by langchain
open-swe-auto
open-swe-max
open-swe-max-auto
pending
performance
pull-request
Mirrored from GitHub Pull Request
 question
requires design
sdk
server
stale
studio
tests
type checking
usage question
v0.5
v1.1
No Label pull-request
Milestone
No items
No Milestone
Projects
Clear projects
No project
Assignees
Clear assignees
yindo
No Assignees
1 Participants
Notifications
Due Date
No due date set.
Dependencies

No dependencies set.

Reference: langchain-ai/langgraph#5191
Delete Branch "%!s()"

Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?