From f1e662d0152b46280cb1179d5f6f8e7a7cc04dbb Mon Sep 17 00:00:00 2001
From: Snowball_233 <wangrb.qq@outlook.com>
Date: Fri, 23 Jan 2026 00:50:36 +0800
Subject: [PATCH] Add cargo cache to speed up builds

---
 .github/workflows/epub.yml | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/.github/workflows/epub.yml b/.github/workflows/epub.yml
index ae24f2f0..6896cc21 100644
--- a/.github/workflows/epub.yml
+++ b/.github/workflows/epub.yml
@@ -16,6 +16,18 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Cache cargo registry
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-
+
       - name: Install mdbook
         uses: peaceiris/actions-mdbook@v2
         with: