[PR #1944] ci(windows): Optimize Windows build workflow for faster CI #2750

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claunia · 2026-01-29T17:23:44Z

claunia commented

2026-01-29 17:23:44 +00:00

Original Pull Request: https://github.com/CCExtractor/ccextractor/pull/1944

State: closed
Merged: Yes

Summary

Major optimizations to reduce Windows build time from ~45 minutes to ~8 minutes (with warm cache):

Changes

Single consolidated job - Previously two parallel jobs (Release/Debug) duplicated the entire 34-minute vcpkg install. Now builds both configurations sequentially in one job, sharing all cached dependencies.
lukka/run-vcpkg action - Replaces manual git clone + bootstrap with the official vcpkg action that has built-in caching and better handling.
Cache vcpkg installed packages - Separately cache the installed/ directory (239 MB) with hash-based keys. On cache hit, the 35-minute vcpkg install is completely skipped.
Cargo caching - Add caching for Rust registry and build artifacts (277 MB), similar to the Linux build workflow.
Updated Rust toolchain action - Replace deprecated actions-rs/toolchain with dtolnay/rust-toolchain.

Measured Results

Scenario	Before	After	Improvement
Cold cache (first run)	~45 min	~46 min	Same (expected)
Warm cache (subsequent runs)	~45 min	~8 min	~83% faster

Timing Breakdown (warm cache run)

Step	Duration
Install gpac	36s
Setup vcpkg	15s
Cache restore	~30s
vcpkg install	SKIPPED (cache hit)
Build Release-Full	2m 43s
Build Debug-Full	2m 56s
Total	7m 50s

Cache Storage (GitHub Actions)

vcpkg-installed-*: 239.4 MB
Windows-cargo-registry-*: 276.7 MB

Test plan

Verify Windows Release build succeeds
Verify Windows Debug build succeeds
Verify artifacts are uploaded correctly
Verify cache hits on subsequent runs
Measured ~83% time reduction with warm cache

🤖 Generated with Claude Code

**Original Pull Request:** https://github.com/CCExtractor/ccextractor/pull/1944 **State:** closed **Merged:** Yes --- ## Summary Major optimizations to reduce Windows build time from **~45 minutes to ~8 minutes** (with warm cache): ### Changes 1. **Single consolidated job** - Previously two parallel jobs (Release/Debug) duplicated the entire 34-minute vcpkg install. Now builds both configurations sequentially in one job, sharing all cached dependencies. 2. **lukka/run-vcpkg action** - Replaces manual git clone + bootstrap with the official vcpkg action that has built-in caching and better handling. 3. **Cache vcpkg installed packages** - Separately cache the `installed/` directory (239 MB) with hash-based keys. On cache hit, the 35-minute vcpkg install is **completely skipped**. 4. **Cargo caching** - Add caching for Rust registry and build artifacts (277 MB), similar to the Linux build workflow. 5. **Updated Rust toolchain action** - Replace deprecated `actions-rs/toolchain` with `dtolnay/rust-toolchain`. ### Measured Results | Scenario | Before | After | Improvement | |----------|--------|-------|-------------| | Cold cache (first run) | ~45 min | ~46 min | Same (expected) | | **Warm cache (subsequent runs)** | ~45 min | **~8 min** | **~83% faster** | ### Timing Breakdown (warm cache run) | Step | Duration | |------|----------| | Install gpac | 36s | | Setup vcpkg | 15s | | Cache restore | ~30s | | **vcpkg install** | **SKIPPED** (cache hit) | | Build Release-Full | 2m 43s | | Build Debug-Full | 2m 56s | | **Total** | **7m 50s** | ### Cache Storage (GitHub Actions) - `vcpkg-installed-*`: 239.4 MB - `Windows-cargo-registry-*`: 276.7 MB ## Test plan - [x] Verify Windows Release build succeeds - [x] Verify Windows Debug build succeeds - [x] Verify artifacts are uploaded correctly - [x] Verify cache hits on subsequent runs - [x] Measured ~83% time reduction with warm cache 🤖 Generated with [Claude Code](https://claude.com/claude-code)

claunia added the pull-request label 2026-01-29 17:23:44 +00:00

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Reference: starred/ccextractor#2750