Ethanfel
2c1777ae4e
ComfyUI-Tenaciousload speeds up ComfyUI page loads for large model/LoRA collections by caching the slow /api/object_info response in memory and on disk (survives restarts) and serving it gzipped in ~milliseconds, instead of rebuilding it (and freezing the event loop) on every load. Adds a "Refresh Models / LoRAs" menu button, a graph node, and a POST /tenaciousload/refresh endpoint to rebuild the cache after adding or removing models. No external dependencies; no nginx/docker required. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
ComfyUI-Tenaciousload
Self-contained fix for slow / black-screen ComfyUI loading when you have a huge model/LoRA collection (especially on a network mount). Just install the pack and restart ComfyUI — no nginx, no docker, no extra port.
The problem
ComfyUI's /api/object_info enumerates every node's inputs. With thousands of
LoRAs (worse on a network mount) it becomes tens of MB and takes minutes to
build on every page load — and the build freezes ComfyUI's whole event
loop, so you get a long black screen, worst over a remote network.
How this pack fixes it
On load it injects an aiohttp middleware into ComfyUI that intercepts
/object_info and /api/object_info and:
- caches the built response in memory and on disk (
./cache/), so it is built once instead of on every load — and the disk copy makes restarts instant (no rebuild); - serves it gzipped in ~milliseconds (≈85% smaller, independent of any CLI flag);
- serves from cache without running the build, so the event-loop freeze is gone for normal loads.
The only time a build runs is the first load after install, or when you explicitly refresh (below).
Refreshing after you add / remove models or LoRAs
The cache holds the old model lists until you refresh, so new files won't appear until you do one of:
- Menu:
Extensions ▸ 🔄 Refresh Models / LoRAs(also in the command palette). - Graph node:
🔄 Refresh Models/LoRAs (Tenaciousload)(for automated workflows). - HTTP:
POST /tenaciousload/refresh, thenGET /object_info?nocache=1.
A refresh re-walks your model folders (slow over a network mount, ~minutes) — the button shows a "refreshing…" toast meanwhile. Normal loads stay instant.
Requirements
None to install. Only ComfyUI itself (tested on 0.23.0) and Python ≥ 3.8.
Everything used is Python stdlib or already bundled with ComfyUI (aiohttp,
folder_paths, server). The web button needs no npm packages.
Install
Clone (or copy) this repo into your ComfyUI custom_nodes/ folder and restart
ComfyUI:
cd ComfyUI/custom_nodes
git clone https://github.com/ethanfel/ComfyUI-Tenaciousload.git
# then restart ComfyUI
Nothing to pip install. ComfyUI-Manager can also install it from the registry.
Verify it's working
After restart, load the page once (first time builds + caches), then:
curl -s -H 'Accept-Encoding: gzip' -o /dev/null \
-w '%{time_total}s | %{size_download} bytes | %header{x-tenaciousload-cache} | %header{content-encoding}\n' \
http://127.0.0.1:8188/api/object_info # use your ComfyUI port
# expect after the first load: ~0.00Xs | ~10 MB | HIT | gzip
ComfyUI's startup log should show Tenaciousload: object_info cache middleware installed.
Notes
- The disk cache lives in
./cache/(git-ignored). Delete it, or use the refresh button, to force a rebuild. - An nginx reverse proxy can cache
object_infoat the HTTP layer too, but this pack does it in-process so no extra service, container, or port is needed.
License
MIT — see LICENSE.