Merge remote-tracking branch 'origin/releases/v3-beta' into 700-actionscache-granular-cache-control

RELEASES.md

@@ -46,3 +46,6 @@
 
 ### 3.1.0-beta.2
 - Added support for fallback to gzip to restore old caches on windows.
+
+### 3.1.0-beta.3
+- Bug fixes for bsdtar fallback if gnutar not available and gzip fallback if cache saved using old cache action on windows.

dist/restore/index.js

@@ -3432,6 +3432,7 @@ function getCacheEntry(keys, paths, options) {
         const resource = `cache?keys=${encodeURIComponent(keys.join(','))}&version=${version}`;
         const response = yield requestUtils_1.retryTypedResponse('getCacheEntry', () => __awaiter(this, void 0, void 0, function* () { return httpClient.getJson(getCacheApiUrl(resource)); }));
         if (response.statusCode === 204) {
+            // Cache not found
             return null;
         }
         if (!requestUtils_1.isSuccessStatusCode(response.statusCode)) {
@@ -3440,6 +3441,7 @@ function getCacheEntry(keys, paths, options) {
         const cacheResult = response.result;
         const cacheDownloadUrl = cacheResult === null || cacheResult === void 0 ? void 0 : cacheResult.archiveLocation;
         if (!cacheDownloadUrl) {
+            // Cache achiveLocation not found. This should never happen, and hence bail out.
             throw new Error('Cache not found.');
         }
         core.setSecret(cacheDownloadUrl);
@@ -38114,7 +38116,7 @@ const path = __importStar(__webpack_require__(622));
 const utils = __importStar(__webpack_require__(15));
 const constants_1 = __webpack_require__(931);
 const IS_WINDOWS = process.platform === 'win32';
-// Function also mutates the args array. For non-mutation call with passing an empty array.
+// Returns tar path and type: BSD or GNU
 function getTarPath() {
     return __awaiter(this, void 0, void 0, function* () {
         switch (process.platform) {
@@ -38146,6 +38148,7 @@ function getTarPath() {
             default:
                 break;
         }
+        // Default assumption is GNU tar is present in path
         return {
             path: yield io.which('tar', true),
             type: constants_1.ArchiveToolType.GNU
@@ -38159,6 +38162,7 @@ function getTarArgs(tarPath, compressionMethod, type, archivePath = '') {
         const cacheFileName = utils.getCacheFileName(compressionMethod);
         const tarFile = 'cache.tar';
         const workingDirectory = getWorkingDirectory();
+        // Speficic args for BSD tar on windows for workaround
         const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
             compressionMethod !== constants_1.CompressionMethod.Gzip &&
             IS_WINDOWS;
@@ -38196,8 +38200,10 @@ function getTarArgs(tarPath, compressionMethod, type, archivePath = '') {
         return args;
     });
 }
-function getArgs(compressionMethod, type, archivePath = '') {
+// Returns commands to run tar and compression program
+function getCommands(compressionMethod, type, archivePath = '') {
     return __awaiter(this, void 0, void 0, function* () {
+        let args;
         const tarPath = yield getTarPath();
         const tarArgs = yield getTarArgs(tarPath, compressionMethod, type, archivePath);
         const compressionArgs = type !== 'create'
@@ -38207,11 +38213,15 @@ function getArgs(compressionMethod, type, archivePath = '') {
             compressionMethod !== constants_1.CompressionMethod.Gzip &&
             IS_WINDOWS;
         if (BSD_TAR_ZSTD && type !== 'create') {
-            return [...compressionArgs, ...tarArgs].join(' ');
+            args = [[...compressionArgs].join(' '), [...tarArgs].join(' ')];
         }
         else {
-            return [...tarArgs, ...compressionArgs].join(' ');
+            args = [[...tarArgs].join(' '), [...compressionArgs].join(' ')];
         }
+        if (BSD_TAR_ZSTD) {
+            return args;
+        }
+        return [args.join(' ')];
     });
 }
 function getWorkingDirectory() {
@@ -38234,8 +38244,7 @@ function getDecompressionProgram(tarPath, compressionMethod, archivePath) {
                     ? [
                         'zstd -d --long=30 -o',
                         constants_1.TarFilename,
-                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
-                        '&&'
+                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
                     ]
                     : [
                         '--use-compress-program',
@@ -38246,8 +38255,7 @@ function getDecompressionProgram(tarPath, compressionMethod, archivePath) {
                     ? [
                         'zstd -d -o',
                         constants_1.TarFilename,
-                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
-                        '&&'
+                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
                     ]
                     : ['--use-compress-program', IS_WINDOWS ? '"zstd -d"' : 'unzstd'];
             default:
@@ -38255,6 +38263,7 @@ function getDecompressionProgram(tarPath, compressionMethod, archivePath) {
         }
     });
 }
+// Used for creating the archive
 // -T#: Compress using # working thread. If # is 0, attempt to detect and use the number of physical CPU cores.
 // zstdmt is equivalent to 'zstd -T0'
 // --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
@@ -38270,7 +38279,6 @@ function getCompressionProgram(tarPath, compressionMethod) {
             case constants_1.CompressionMethod.Zstd:
                 return BSD_TAR_ZSTD
                     ? [
-                        '&&',
                         'zstd -T0 --long=30 -o',
                         cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
                         constants_1.TarFilename
@@ -38282,7 +38290,6 @@ function getCompressionProgram(tarPath, compressionMethod) {
             case constants_1.CompressionMethod.ZstdWithoutLong:
                 return BSD_TAR_ZSTD
                     ? [
-                        '&&',
                         'zstd -T0 -o',
                         cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
                         constants_1.TarFilename
@@ -38293,44 +38300,45 @@ function getCompressionProgram(tarPath, compressionMethod) {
         }
     });
 }
-function listTar(archivePath, compressionMethod) {
+// Executes all commands as separate processes
+function execCommands(commands, cwd) {
     return __awaiter(this, void 0, void 0, function* () {
-        const args = yield getArgs(compressionMethod, 'list', archivePath);
+        for (const command of commands) {
             try {
-            yield exec_1.exec(args);
+                yield exec_1.exec(command, undefined, { cwd });
             }
             catch (error) {
-            throw new Error(`Tar failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
+                throw new Error(`${command.split(' ')[0]} failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
+            }
         }
     });
 }
+// List the contents of a tar
+function listTar(archivePath, compressionMethod) {
+    return __awaiter(this, void 0, void 0, function* () {
+        const commands = yield getCommands(compressionMethod, 'list', archivePath);
+        yield execCommands(commands);
+    });
+}
 exports.listTar = listTar;
+// Extract a tar
 function extractTar(archivePath, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
         // Create directory to extract tar into
         const workingDirectory = getWorkingDirectory();
         yield io.mkdirP(workingDirectory);
-        const args = yield getArgs(compressionMethod, 'extract', archivePath);
-        try {
-            yield exec_1.exec(args);
-        }
-        catch (error) {
-            throw new Error(`Tar failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
-        }
+        const commands = yield getCommands(compressionMethod, 'extract', archivePath);
+        yield execCommands(commands);
     });
 }
 exports.extractTar = extractTar;
+// Create a tar
 function createTar(archiveFolder, sourceDirectories, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
         // Write source directories to manifest.txt to avoid command length limits
         fs_1.writeFileSync(path.join(archiveFolder, constants_1.ManifestFilename), sourceDirectories.join('\n'));
-        const args = yield getArgs(compressionMethod, 'create');
-        try {
-            yield exec_1.exec(args, undefined, { cwd: archiveFolder });
-        }
-        catch (error) {
-            throw new Error(`Tar failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
-        }
+        const commands = yield getCommands(compressionMethod, 'create');
+        yield execCommands(commands, archiveFolder);
     });
 }
 exports.createTar = createTar;
@@ -47203,16 +47211,13 @@ function restoreCache(paths, primaryKey, restoreKeys, options) {
         let cacheEntry;
         let compressionMethod = yield utils.getCompressionMethod();
         let archivePath = '';
-        try {
         try {
             // path are needed to compute version
             cacheEntry = yield cacheHttpClient.getCacheEntry(keys, paths, {
                 compressionMethod
             });
-            }
-            catch (error) {
-                // This is to support the old cache entry created
-                // by the old version of the cache action on windows.
+            if (!(cacheEntry === null || cacheEntry === void 0 ? void 0 : cacheEntry.archiveLocation)) {
+                // This is to support the old cache entry created by gzip on windows.
                 if (process.platform === 'win32' &&
                     compressionMethod !== constants_1.CompressionMethod.Gzip) {
                     compressionMethod = constants_1.CompressionMethod.Gzip;
@@ -47220,17 +47225,15 @@ function restoreCache(paths, primaryKey, restoreKeys, options) {
                         compressionMethod
                     });
                     if (!(cacheEntry === null || cacheEntry === void 0 ? void 0 : cacheEntry.archiveLocation)) {
-                        throw error;
+                        return undefined;
                     }
+                    core.debug("Couldn't find cache entry with zstd compression, falling back to gzip compression.");
                 }
                 else {
-                    throw error;
-                }
-            }
-            if (!(cacheEntry === null || cacheEntry === void 0 ? void 0 : cacheEntry.archiveLocation)) {
                     // Cache not found
                     return undefined;
                 }
+            }
             archivePath = path.join(yield utils.createTempDirectory(), utils.getCacheFileName(compressionMethod));
             core.debug(`Archive Path: ${archivePath}`);
             // Download the cache from the cache entry

dist/save/index.js

@@ -3432,6 +3432,7 @@ function getCacheEntry(keys, paths, options) {
         const resource = `cache?keys=${encodeURIComponent(keys.join(','))}&version=${version}`;
         const response = yield requestUtils_1.retryTypedResponse('getCacheEntry', () => __awaiter(this, void 0, void 0, function* () { return httpClient.getJson(getCacheApiUrl(resource)); }));
         if (response.statusCode === 204) {
+            // Cache not found
             return null;
         }
         if (!requestUtils_1.isSuccessStatusCode(response.statusCode)) {
@@ -3440,6 +3441,7 @@ function getCacheEntry(keys, paths, options) {
         const cacheResult = response.result;
         const cacheDownloadUrl = cacheResult === null || cacheResult === void 0 ? void 0 : cacheResult.archiveLocation;
         if (!cacheDownloadUrl) {
+            // Cache achiveLocation not found. This should never happen, and hence bail out.
             throw new Error('Cache not found.');
         }
         core.setSecret(cacheDownloadUrl);
@@ -38109,7 +38111,7 @@ const path = __importStar(__webpack_require__(622));
 const utils = __importStar(__webpack_require__(15));
 const constants_1 = __webpack_require__(931);
 const IS_WINDOWS = process.platform === 'win32';
-// Function also mutates the args array. For non-mutation call with passing an empty array.
+// Returns tar path and type: BSD or GNU
 function getTarPath() {
     return __awaiter(this, void 0, void 0, function* () {
         switch (process.platform) {
@@ -38141,6 +38143,7 @@ function getTarPath() {
             default:
                 break;
         }
+        // Default assumption is GNU tar is present in path
         return {
             path: yield io.which('tar', true),
             type: constants_1.ArchiveToolType.GNU
@@ -38154,6 +38157,7 @@ function getTarArgs(tarPath, compressionMethod, type, archivePath = '') {
         const cacheFileName = utils.getCacheFileName(compressionMethod);
         const tarFile = 'cache.tar';
         const workingDirectory = getWorkingDirectory();
+        // Speficic args for BSD tar on windows for workaround
         const BSD_TAR_ZSTD = tarPath.type === constants_1.ArchiveToolType.BSD &&
             compressionMethod !== constants_1.CompressionMethod.Gzip &&
             IS_WINDOWS;
@@ -38191,8 +38195,10 @@ function getTarArgs(tarPath, compressionMethod, type, archivePath = '') {
         return args;
     });
 }
-function getArgs(compressionMethod, type, archivePath = '') {
+// Returns commands to run tar and compression program
+function getCommands(compressionMethod, type, archivePath = '') {
     return __awaiter(this, void 0, void 0, function* () {
+        let args;
         const tarPath = yield getTarPath();
         const tarArgs = yield getTarArgs(tarPath, compressionMethod, type, archivePath);
         const compressionArgs = type !== 'create'
@@ -38202,11 +38208,15 @@ function getArgs(compressionMethod, type, archivePath = '') {
             compressionMethod !== constants_1.CompressionMethod.Gzip &&
             IS_WINDOWS;
         if (BSD_TAR_ZSTD && type !== 'create') {
-            return [...compressionArgs, ...tarArgs].join(' ');
+            args = [[...compressionArgs].join(' '), [...tarArgs].join(' ')];
         }
         else {
-            return [...tarArgs, ...compressionArgs].join(' ');
+            args = [[...tarArgs].join(' '), [...compressionArgs].join(' ')];
         }
+        if (BSD_TAR_ZSTD) {
+            return args;
+        }
+        return [args.join(' ')];
     });
 }
 function getWorkingDirectory() {
@@ -38229,8 +38239,7 @@ function getDecompressionProgram(tarPath, compressionMethod, archivePath) {
                     ? [
                         'zstd -d --long=30 -o',
                         constants_1.TarFilename,
-                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
-                        '&&'
+                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
                     ]
                     : [
                         '--use-compress-program',
@@ -38241,8 +38250,7 @@ function getDecompressionProgram(tarPath, compressionMethod, archivePath) {
                     ? [
                         'zstd -d -o',
                         constants_1.TarFilename,
-                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
-                        '&&'
+                        archivePath.replace(new RegExp(`\\${path.sep}`, 'g'), '/')
                     ]
                     : ['--use-compress-program', IS_WINDOWS ? '"zstd -d"' : 'unzstd'];
             default:
@@ -38250,6 +38258,7 @@ function getDecompressionProgram(tarPath, compressionMethod, archivePath) {
         }
     });
 }
+// Used for creating the archive
 // -T#: Compress using # working thread. If # is 0, attempt to detect and use the number of physical CPU cores.
 // zstdmt is equivalent to 'zstd -T0'
 // --long=#: Enables long distance matching with # bits. Maximum is 30 (1GB) on 32-bit OS and 31 (2GB) on 64-bit.
@@ -38265,7 +38274,6 @@ function getCompressionProgram(tarPath, compressionMethod) {
             case constants_1.CompressionMethod.Zstd:
                 return BSD_TAR_ZSTD
                     ? [
-                        '&&',
                         'zstd -T0 --long=30 -o',
                         cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
                         constants_1.TarFilename
@@ -38277,7 +38285,6 @@ function getCompressionProgram(tarPath, compressionMethod) {
             case constants_1.CompressionMethod.ZstdWithoutLong:
                 return BSD_TAR_ZSTD
                     ? [
-                        '&&',
                         'zstd -T0 -o',
                         cacheFileName.replace(new RegExp(`\\${path.sep}`, 'g'), '/'),
                         constants_1.TarFilename
@@ -38288,44 +38295,45 @@ function getCompressionProgram(tarPath, compressionMethod) {
         }
     });
 }
-function listTar(archivePath, compressionMethod) {
+// Executes all commands as separate processes
+function execCommands(commands, cwd) {
     return __awaiter(this, void 0, void 0, function* () {
-        const args = yield getArgs(compressionMethod, 'list', archivePath);
+        for (const command of commands) {
             try {
-            yield exec_1.exec(args);
+                yield exec_1.exec(command, undefined, { cwd });
             }
             catch (error) {
-            throw new Error(`Tar failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
+                throw new Error(`${command.split(' ')[0]} failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
+            }
         }
     });
 }
+// List the contents of a tar
+function listTar(archivePath, compressionMethod) {
+    return __awaiter(this, void 0, void 0, function* () {
+        const commands = yield getCommands(compressionMethod, 'list', archivePath);
+        yield execCommands(commands);
+    });
+}
 exports.listTar = listTar;
+// Extract a tar
 function extractTar(archivePath, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
         // Create directory to extract tar into
         const workingDirectory = getWorkingDirectory();
         yield io.mkdirP(workingDirectory);
-        const args = yield getArgs(compressionMethod, 'extract', archivePath);
-        try {
-            yield exec_1.exec(args);
-        }
-        catch (error) {
-            throw new Error(`Tar failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
-        }
+        const commands = yield getCommands(compressionMethod, 'extract', archivePath);
+        yield execCommands(commands);
     });
 }
 exports.extractTar = extractTar;
+// Create a tar
 function createTar(archiveFolder, sourceDirectories, compressionMethod) {
     return __awaiter(this, void 0, void 0, function* () {
         // Write source directories to manifest.txt to avoid command length limits
         fs_1.writeFileSync(path.join(archiveFolder, constants_1.ManifestFilename), sourceDirectories.join('\n'));
-        const args = yield getArgs(compressionMethod, 'create');
-        try {
-            yield exec_1.exec(args, undefined, { cwd: archiveFolder });
-        }
-        catch (error) {
-            throw new Error(`Tar failed with error: ${error === null || error === void 0 ? void 0 : error.message}`);
-        }
+        const commands = yield getCommands(compressionMethod, 'create');
+        yield execCommands(commands, archiveFolder);
     });
 }
 exports.createTar = createTar;
@@ -47316,16 +47324,13 @@ function restoreCache(paths, primaryKey, restoreKeys, options) {
         let cacheEntry;
         let compressionMethod = yield utils.getCompressionMethod();
         let archivePath = '';
-        try {
         try {
             // path are needed to compute version
             cacheEntry = yield cacheHttpClient.getCacheEntry(keys, paths, {
                 compressionMethod
             });
-            }
-            catch (error) {
-                // This is to support the old cache entry created
-                // by the old version of the cache action on windows.
+            if (!(cacheEntry === null || cacheEntry === void 0 ? void 0 : cacheEntry.archiveLocation)) {
+                // This is to support the old cache entry created by gzip on windows.
                 if (process.platform === 'win32' &&
                     compressionMethod !== constants_1.CompressionMethod.Gzip) {
                     compressionMethod = constants_1.CompressionMethod.Gzip;
@@ -47333,17 +47338,15 @@ function restoreCache(paths, primaryKey, restoreKeys, options) {
                         compressionMethod
                     });
                     if (!(cacheEntry === null || cacheEntry === void 0 ? void 0 : cacheEntry.archiveLocation)) {
-                        throw error;
+                        return undefined;
                     }
+                    core.debug("Couldn't find cache entry with zstd compression, falling back to gzip compression.");
                 }
                 else {
-                    throw error;
-                }
-            }
-            if (!(cacheEntry === null || cacheEntry === void 0 ? void 0 : cacheEntry.archiveLocation)) {
                     // Cache not found
                     return undefined;
                 }
+            }
             archivePath = path.join(yield utils.createTempDirectory(), utils.getCacheFileName(compressionMethod));
             core.debug(`Archive Path: ${archivePath}`);
             // Download the cache from the cache entry

examples.md

@@ -317,7 +317,7 @@ After [deprecation](https://github.blog/changelog/2022-10-11-github-actions-depr
 ### Bash shell
 ```yaml
 - name: Get npm cache directory
-  id: npm-cache
+  id: npm-cache-dir
   shell: bash
   run: echo "dir=$(npm config get cache)" >> ${GITHUB_OUTPUT}
 ```
@@ -325,7 +325,7 @@ After [deprecation](https://github.blog/changelog/2022-10-11-github-actions-depr
 ### PWSH shell
 ```yaml
 - name: Get npm cache directory
-  id: npm-cache
+  id: npm-cache-dir
   shell: pwsh
   run: echo "dir=$(npm config get cache)" >> ${env:GITHUB_OUTPUT}
 ```

package-lock.json

@@ -1,15 +1,15 @@
 {
   "name": "cache",
-  "version": "3.1.0-beta.2",
+  "version": "3.1.0-beta.3",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "cache",
-      "version": "3.1.0-beta.2",
+      "version": "3.1.0-beta.3",
       "license": "MIT",
       "dependencies": {
-        "@actions/cache": "3.1.0-beta.2",
+        "@actions/cache": "3.1.0-beta.3",
         "@actions/core": "^1.10.0",
         "@actions/exec": "^1.1.1",
         "@actions/io": "^1.1.2"
@@ -36,9 +36,9 @@
       }
     },
     "node_modules/@actions/cache": {
-      "version": "3.1.0-beta.2",
-      "resolved": "https://registry.npmjs.org/@actions/cache/-/cache-3.1.0-beta.2.tgz",
-      "integrity": "sha512-xt9NLWPCh5WU9Z5ITeGpT5Nza/57wMXeLsGuNVcRCIVpPuNTf3Puj82vjZZQw4rGqiCCs+n4+hnkTcE9BKw2sw==",
+      "version": "3.1.0-beta.3",
+      "resolved": "https://registry.npmjs.org/@actions/cache/-/cache-3.1.0-beta.3.tgz",
+      "integrity": "sha512-71S1vd0WKLbC2lAe04pCYqTLBjSa8gURtiqnVBCYAt8QVBjOfwa2D3ESf2m8K2xjUxman/Yimdp7CPJDyFnxZg==",
       "dependencies": {
         "@actions/core": "^1.10.0",
         "@actions/exec": "^1.0.1",
@@ -9722,9 +9722,9 @@
   },
   "dependencies": {
     "@actions/cache": {
-      "version": "3.1.0-beta.2",
-      "resolved": "https://registry.npmjs.org/@actions/cache/-/cache-3.1.0-beta.2.tgz",
-      "integrity": "sha512-xt9NLWPCh5WU9Z5ITeGpT5Nza/57wMXeLsGuNVcRCIVpPuNTf3Puj82vjZZQw4rGqiCCs+n4+hnkTcE9BKw2sw==",
+      "version": "3.1.0-beta.3",
+      "resolved": "https://registry.npmjs.org/@actions/cache/-/cache-3.1.0-beta.3.tgz",
+      "integrity": "sha512-71S1vd0WKLbC2lAe04pCYqTLBjSa8gURtiqnVBCYAt8QVBjOfwa2D3ESf2m8K2xjUxman/Yimdp7CPJDyFnxZg==",
       "requires": {
         "@actions/core": "^1.10.0",
         "@actions/exec": "^1.0.1",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cache",
-  "version": "3.1.0-beta.2",
+  "version": "3.1.0-beta.3",
   "private": true,
   "description": "Cache dependencies and build outputs",
   "main": "dist/restore/index.js",
@@ -23,7 +23,7 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/cache": "3.1.0-beta.2",
+    "@actions/cache": "3.1.0-beta.3",
     "@actions/core": "^1.10.0",
     "@actions/exec": "^1.1.1",
     "@actions/io": "^1.1.2"

tips-and-workarounds.md

@@ -14,7 +14,7 @@ A cache today is immutable and cannot be updated. But some use cases require the
           restore-keys: |
             primes-${{ runner.os }}
   ```          
-  Please note that this will create a new cache on every run and hence will consume the cache [quota](#cache-limits).
+  Please note that this will create a new cache on every run and hence will consume the cache [quota](./README.md#cache-limits).
   
 ## Use cache across feature branches
 Reusing cache across feature branches is not allowed today to provide cache [isolation](https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#restrictions-for-accessing-a-cache). However if both feature branches are from the default branch, a good way to achieve this is to ensure that the default branch has a cache. This cache will then be consumable by both feature branches.