Project page performance improvements #116

TravisTheTechie · 2025-08-08T17:17:44Z

Summary

Claude completely missed the main reason for doing this... this increases the performance of loading pages, such as /projects and /projects/:id. dev cd shopify goes from 12s to 250ms to render the page. I redirected a couple of decisions Claude made, such as using system + Shellwords instead of just using Open3 everywhere. And the use of git ignore-check instead of attempting to a) understand .gitignore or maintain a different set of ignored files.

This PR improves code quality and security by cleaning up trailing spaces across all JavaScript files and replacing shell command execution with the safer Open3 library for git operations.

Changes

JavaScript Code Cleanup

Removed trailing spaces from 47 JavaScript files in app/javascript/
Improves code consistency and prevents potential issues with some tools/editors
Files affected include all Stimulus controllers and Swarm Visual Builder modules

Git Operations Security Improvement

Replaced Shellwords.escape() with Open3.capture3() array form in sessions_controller.rb
Updated test files to use Open3.capture3() instead of system() calls
Benefits:
- Automatic safe escaping of arguments
- No manual string escaping needed
- Protection against shell injection vulnerabilities
- Cleaner, more maintainable code

Files Changed

51 files modified with 1,829 insertions and 1,762 deletions
Key files:
- app/controllers/sessions_controller.rb - Removed Shellwords dependency
- app/models/project.rb - Already using Open3 correctly
- test/services/git_service_test.rb - Replaced system() with Open3
- test/models/project_test.rb - Replaced system() with Open3
- 47 JavaScript files - Trailing space cleanup

Testing

All tests passing
Git operations tested with file paths containing spaces
No functional changes, only code quality improvements

Migration Notes

None required - these are internal implementation improvements with no API changes.

Performance improvements to address ~12s load times for large projects: Git Operations: - Remove synchronous git fetch from page loads - Add lightweight git_dirty_quick_check method without caching - Create separate git_status and git_status_with_fetch methods - Make git status checks async via JavaScript controllers - Increase git_status cache TTL from 1 to 5 minutes - Disable automatic fetch in OptimizedGitStatusService File Scanning: - Exclude common directories from swarm file search (node_modules, vendor, etc) - Skip all directories starting with dot (.) - Limit search depth to 5 directory levels - Add 10-minute caching for find_swarm_files results - Make swarm file count load asynchronously New Endpoints: - /projects/:id/git_dirty_check - Lightweight dirty status check - /projects/:id/swarm_count - Async swarm file count Impact: - Initial page load reduced from ~12s to <1s for large repos - Git operations only run when explicitly needed - File scanning avoids irrelevant directories - Results are cached and reused efficiently Tests: - Added comprehensive tests for all new functionality - All 736 tests passing with 1777 assertions

…erations - Remove trailing spaces from all JavaScript files - Replace Shellwords escaping with Open3 array form in sessions_controller.rb - Update test files to use Open3.capture3 instead of system() calls - Improve safety by using Open3's automatic escaping instead of manual Shellwords

TravisTheTechie · 2025-08-08T17:30:45Z

/review

TravisTheTechie

Performance Review Complete 🚀

Excellent work on achieving a 48x performance improvement (12s → 250ms)! The migration to Open3 also significantly improves security. Here are the critical issues to address:

🔴 Critical Issues

1. Cache Coherency Problem
The different TTLs create inconsistent state:

git_status cached for 5 minutes
git_dirty cached for 1 minute
A project could show as clean in status but dirty in badge

Fix: Use consistent TTLs or implement hierarchical cache invalidation.

2. Performance Degradation with Large Projects
should_ignore_path? spawns a new git process for EVERY file checked. For projects with 1000+ files, this could spawn thousands of processes.

Fix: Batch git check-ignore operations or cache results.

🟡 Important Issues

3. Swarm Count Badge Stale After Operations
After deleting swarm files via UI, the badge count remains stale until page refresh.

Fix: Add event listener in swarm_count_badge_controller.js for swarm file changes.

4. Missing Cache Invalidation

Project path updates don't clear git caches
Branch switching lacks explicit cache clearing

Fix: Add after_update callback for path changes.

5. Request Duplication
No deduplication for concurrent async requests - multiple badge loads trigger duplicate API calls.

Fix: Implement request debouncing/deduplication in Stimulus controllers.

📋 Recommendations

Immediate:

Fix cache TTL inconsistency
Add documentation for caching strategy
Batch git check-ignore operations

Testing Gaps:

Add tests for cache race conditions
Test concurrent async request handling
Add performance benchmarks to prevent regression

The performance gains are impressive and the Open3 migration is excellent for security. Please address the cache coherency and performance scaling issues before merging.

TravisTheTechie · 2025-08-08T20:00:00Z

app/models/project.rb

+
  def git_status
-    Rails.cache.fetch("project_#{id}_git_status", expires_in: 1.minute) do
+    Rails.cache.fetch("project_#{id}_git_status", expires_in: 5.minutes) do


Need to extract the cache time to a constant and use it consistently.

TravisTheTechie · 2025-08-08T20:05:23Z

app/models/project.rb

-        }
-      rescue StandardError => e
-        Rails.logger.warn("Error reading swarm file #{file}: #{e.message}")
+    Rails.cache.fetch("project_#{id}_swarm_files", expires_in: 10.minutes) do


10 minutes is way too long. I don't think I like this implementation...

we should skip hidden files, that was added but got clobbered with the git ignore implementation.

It's still likely the slowest operation we have here. Even on relatively small projects.

A cache isn't bad, but I think it's more useful to load the dropdown while still indicating it's checking for new entries.

Maybe we register theses in the DB and make some actively do the search for new yaml files instead of it happening every time the object needs to fulfill the list? That might be the best of both worlds type of thing.

I thought git operations were slow for projects in Core; but turns out it's actually this that's causing the biggest lags. The git operations are all short circuited because there's no ./.git folder in the project root.

TravisTheTechie · 2025-08-08T20:06:09Z

app/models/project.rb

+    return false unless git?
+
+    # Get relative path from project root
+    relative_path = file_path.sub("#{path}/", "")


I'm not sure we need this complexity of checking relative paths, just the fully path should still resolve? I'll check that out.

TravisTheTechie · 2025-08-08T20:07:47Z

app/services/git_service.rb

-    message = run_git_command("log -1 --pretty=%s").strip
-    author = run_git_command("log -1 --pretty=%an").strip
-    date = run_git_command("log -1 --pretty=%ar").strip
+    results, _, _ = run_git_command(["log", "-1", "--pretty=%H%n%an%n%ar%n%s"])


I should add a comment on the pretty format here. TODO for me.

TravisTheTechie · 2025-08-08T20:10:14Z

app/services/optimized_git_status_service.rb

-      # Fetch from remote to ensure ahead/behind counts are accurate
-      git fetch --quiet 2>/dev/null || true
+      # Don't fetch by default - it's too expensive for large repos
+      # Users can manually sync when needed
+      # git fetch --quiet 2>/dev/null || true


This doesn't seem right. Let me revisit it.

TravisTheTechie force-pushed the project-rendering-performance-improvements branch from ccf6577 to 07fed37 Compare August 8, 2025 17:19

TravisTheTechie force-pushed the project-rendering-performance-improvements branch from 07fed37 to 4e9d2d5 Compare August 8, 2025 17:23

TravisTheTechie changed the title ~~Clean up trailing spaces in JavaScript files and use Open3 for git operations~~ Project page performance improvements Aug 8, 2025

Attempting to speed up a few of the git operations.

4c0158f

TravisTheTechie commented Aug 8, 2025

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Project page performance improvements #116

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TravisTheTechie commented Aug 8, 2025 •

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TravisTheTechie commented Aug 8, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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Summary

Changes

JavaScript Code Cleanup

Git Operations Security Improvement

Files Changed

Testing

Migration Notes

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Performance Review Complete 🚀

🔴 Critical Issues

🟡 Important Issues

📋 Recommendations

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TravisTheTechie commented Aug 8, 2025 •

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