Merge 63d8658a943c15ea568297581209370eebedf25d into 36f1e144e1c8edb0a652766b484448563d8baf46

Closes: #1513

README.md

@@ -126,7 +126,7 @@ jobs:
       run: /primes.sh -d prime-numbers
 ```
 
-The `cache` action provides a `cache-hit` output which is set to `true` when the cache is restored using the primary `key` and `false` when the cache is restored using `restore-keys` or no cache is restored.
+The `cache` action provides a `cache-hit` output which is set to `true` when the cache is restored using the primary `key` and `false` when the cache is restored using `restore-keys`. If no cache is restored, it is set to the empty string.
 
 #### Using a combination of restore and save actions
 

save/README.md

@@ -79,8 +79,10 @@ To avoid saving a cache that already exists, the `cache-hit` output from a resto
 The `cache-primary-key` output from the restore step should also be used to ensure
 the cache key does not change during the build if it's calculated based on file contents.
 
+Here's an example where we imagine we're calculating a lot of prime numbers and want to cache them:
+
 ```yaml
-name: Always Caching Primes
+name: Always Caching Prime Numbers
 
 on: push
 
@@ -91,23 +93,23 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - name: Restore cached Primes
+    - name: Restore cached Prime Numbers
-      id: cache-primes-restore
+      id: cache-prime-numbers-restore
       uses: actions/cache/restore@v4
       with:
-        key: ${{ runner.os }}-primes
+        key: ${{ runner.os }}-prime-numbers
         path: |
           path/to/dependencies
           some/other/dependencies
 
     # Intermediate workflow steps
 
-    - name: Always Save Primes
+    - name: Always Save Prime Numbers
-      id: cache-primes-save
+      id: cache-prime-numbers-save
-      if: always() && steps.cache-primes-restore.outputs.cache-hit != 'true'
+      if: always() && steps.cache-prime-numbers-restore.outputs.cache-hit != 'true'
       uses: actions/cache/save@v4
       with:
-        key: ${{ steps.cache-primes-restore.outputs.cache-primary-key }}
+        key: ${{ steps.cache-prime-numbers-restore.outputs.cache-primary-key }}
         path: |
           path/to/dependencies
           some/other/dependencies