⚡ Bolt: [performance improvement] Cache static Printify variant lookups#48
⚡ Bolt: [performance improvement] Cache static Printify variant lookups#48merg357 wants to merge 1 commit into
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Added `@functools.lru_cache(maxsize=None)` to `get_variants` and `get_blueprint_variants` functions in `printify_manager.py`, `create_merch.py`, `merch_factory.py`, and `merg_bridge.py`. Converted the returned list to an immutable tuple to prevent downstream state mutations. Added journal entry for learning about immutable caching with lru_cache. Co-authored-by: merg357 <221854052+merg357@users.noreply.github.com>
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Pull request overview
Adds @functools.lru_cache(maxsize=None) to Printify variant lookup functions to eliminate redundant API calls during bulk product creation, and converts return types from list to immutable tuple for cache safety.
Changes:
- Memoize
get_variants/get_blueprint_variantswithfunctools.lru_cachein 3 product-creation scripts. - Change return types from
listtotuple(immutable) to protect cached values. - Add a
.jules/bolt.mdlearning note documenting the pattern.
Reviewed changes
Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.
Show a summary per file
| File | Description |
|---|---|
| printify_manager.py | Adds lru_cache + tuple return to get_variants. |
| merg_bridge.py | Adds lru_cache + tuple return to get_blueprint_variants (still contains mutable dicts). |
| merch_factory.py | Adds lru_cache + tuple return to get_variants; caller signature still typed list. |
| create_merch.py | Adds lru_cache + Tuple return to get_variants. |
| .jules/bolt.md | New documentation note on immutable lru_cache pattern. |
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💡 What: Added
@functools.lru_cache(maxsize=None)to Printify variant lookup functions across the codebase (get_variants,get_blueprint_variants) and changed their return types to immutabletuples to guarantee thread safety and prevent downstream modification.🎯 Why: To eliminate N+1 network requests. When bulk-creating products, the same static/infrequently changing print provider variant data is queried repeatedly, causing a significant network bottleneck.
📊 Impact: Drastically reduces total execution time and network I/O during bulk product creation by skipping redundant API calls. Also avoids API rate limits.
🔬 Measurement: Verify by running product creation commands for multiple products targeting the same blueprint/provider combination. Network inspection (or timing the script execution) will show only one request to the
/variants.jsonendpoint per unique blueprint/provider.PR created automatically by Jules for task 2441362908905101839 started by @merg357