From fb6129395381a58d7ff2af3085e6e0dc87d716ee Mon Sep 17 00:00:00 2001
From: Mike Hardy <github@mikehardy.net>
Date: Thu, 1 Jan 2026 09:56:48 -0500
Subject: [PATCH 1/3] chore(ci): only cache main - avoid branches LRU evicting
 main cache use the separate actions/cache "restore" and "save" actions so we
 may only save optional based on whether we are on main or not

actions/cache isolates branch caches from main to avoid branch cache
poison attacks on main runs

but branches may see main cache as those caches are considered trustworthy

branch caches do consume available LRU storage though, meaning branch caches
could evict main caches and in high traffic / large cache repositories like
this one that means caches LRU out frequently and cache hit rates are terrible
unless you cache on main only
---
 .github/workflows/tests_e2e_android.yml | 47 ++++++++++++++++----
 .github/workflows/tests_e2e_ios.yml     | 57 ++++++++++++++++++++-----
 .github/workflows/tests_e2e_other.yml   | 52 +++++++++++++++++-----
 3 files changed, 127 insertions(+), 29 deletions(-)

diff --git a/.github/workflows/tests_e2e_android.yml b/.github/workflows/tests_e2e_android.yml
index 6b3c46f54d..6a0b742cc4 100644
--- a/.github/workflows/tests_e2e_android.yml
+++ b/.github/workflows/tests_e2e_android.yml
@@ -142,8 +142,8 @@ jobs:
           echo "metro-cache=$HOME/.metro" >> $GITHUB_OUTPUT
           echo "tempdir=$TMPDIR" >> $GITHUB_OUTPUT
 
-      - uses: actions/cache@v4
-        name: Yarn Cache
+      - name: Yarn Cache Restore
+        uses: actions/cache/restore@v4
         id: yarn-cache
         with:
           path: .yarn/cache
@@ -158,8 +158,9 @@ jobs:
           max_attempts: 3
           command: DETOX_DISABLE_POSTINSTALL=1 yarn
 
-      - name: Cache Firestore Emulator
-        uses: actions/cache@v4
+      - name: Firestore Emulator Restore
+        uses: actions/cache/restore@v4
+        id: firestore-emulator-cache
         with:
           path: ~/.cache/firebase/emulators
           key: firebase-emulators-v1-${{ github.run_id }}
@@ -168,8 +169,9 @@ jobs:
       - name: Start Firestore Emulator
         run: yarn tests:emulator:start-ci
 
-      - uses: actions/cache@v4
-        name: Gradle Cache
+      - name: Gradle Cache Restore
+        uses: actions/cache/restore@v4
+        id: gradle-cache
         with:
           path: ~/.gradle/caches
           key: ${{ runner.os }}-gradle-v1-${{ hashFiles('yarn.lock', 'tests/android/build.gradle', 'tests/android/app/build.gradle') }}
@@ -183,8 +185,9 @@ jobs:
           max_attempts: 3
           command: yarn tests:android:build
 
-      - name: Metro Bundler Cache
-        uses: actions/cache@v4
+      - name: Metro Bundler Cache Restore
+        uses: actions/cache/restore@v4
+        id: metro-bundler-cache
         with:
           path: ${{ steps.workflow-variables.outputs.metro-cache }}
           key: ${{ runner.os }}-metro-v1-${{ github.run_id }}
@@ -241,3 +244,31 @@ jobs:
         with:
           name: adb_logs_${{ matrix.api-level}}_${{ matrix.arch }}_${{ matrix.target }}_${{ matrix.iteration }}
           path: adb-*.txt
+
+      - name: Yarn Cache Save
+        uses: actions/cache/save@v4
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        with:
+          path: .yarn/cache
+          key: ${{ steps.yarn-cache.outputs.cache-primary-key }}
+
+      - name: Firestore Emulator Cache Save
+        uses: actions/cache/save@v4
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        with:
+          path: ~/.cache/firebase/emulators
+          key: ${{ steps.firestore-emulator-cache.outputs.cache-primary-key }}
+
+      - name: Gradle Cache Save
+        uses: actions/cache/save@v4
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        with:
+          path: ~/.gradle/caches
+          key: ${{ steps.gradle-cache.outputs.cache-primary-key }}
+
+      - name: Metro Bundler Cache Save
+        uses: actions/cache/save@v4
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        with:
+          path: ${{ steps.workflow-variables.outputs.metro-cache }}
+          key: ${{ steps.metro-bundler-cache.outputs.cache-primary-key }}
diff --git a/.github/workflows/tests_e2e_ios.yml b/.github/workflows/tests_e2e_ios.yml
index 0b7bd291d1..fed57374f4 100644
--- a/.github/workflows/tests_e2e_ios.yml
+++ b/.github/workflows/tests_e2e_ios.yml
@@ -141,16 +141,16 @@ jobs:
           echo "metro-cache=$HOME/.metro" >> $GITHUB_OUTPUT
           echo "xcode-version=$(xcodebuild -version|tail -1|cut -f3 -d' ')" >> $GITHUB_OUTPUT
 
-      - uses: actions/cache@v4
-        name: Yarn Cache
+      - name: Yarn Cache Restore
+        uses: actions/cache/restore@v4
         id: yarn-cache
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-ios-yarn-v1-${{ hashFiles('yarn.lock') }}
           restore-keys: ${{ runner.os }}-ios-yarn-v1
 
-      - uses: actions/cache@v4
-        name: Detox Framework Cache
+      - name: Detox Framework Cache Restore
+        uses: actions/cache/restore@v4
         id: detox-cache
         with:
           path: ~/Library/Detox/ios
@@ -185,8 +185,8 @@ jobs:
           max_attempts: 3
           command: gem update cocoapods xcodeproj
 
-      - uses: actions/cache@v4
-        name: Cache Pods
+      - name: Pods Cache Restore
+        uses: actions/cache/restore@v4
         id: pods-cache
         with:
           path: tests/ios/Pods
@@ -201,8 +201,9 @@ jobs:
           max_attempts: 3
           command: yarn tests:ios:pod:install
 
-      - name: Cache Firestore Emulator
-        uses: actions/cache@v4
+      - name: Firestore Emulator Restore
+        uses: actions/cache/restore@v4
+        id: firestore-emulator-cache
         with:
           path: ~/.cache/firebase/emulators
           key: firebase-emulators-v1-${{ github.run_id }}
@@ -254,8 +255,9 @@ jobs:
           ccache -s
         shell: bash
 
-      - name: Metro Bundler Cache
-        uses: actions/cache@v4
+      - name: Metro Bundler Cache Restore
+        uses: actions/cache/restore@v4
+        id: metro-bundler-cache
         with:
           path: ${{ steps.workflow-variables.outputs.metro-cache }}
           key: ${{ runner.os }}-ios-metro-v1-${{ github.run_id }}
@@ -344,3 +346,38 @@ jobs:
         continue-on-error: true
         with:
           verbose: true
+
+      - name: Yarn Cache Save
+        uses: actions/cache/save@v4
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        with:
+          path: .yarn/cache
+          key: ${{ steps.yarn-cache.outputs.cache-primary-key }}
+
+      - name: Detox Framework Cache Save
+        uses: actions/cache/save@v4
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        with:
+          path: ~/Library/Detox/ios
+          key: ${{ steps.detox-cache.outputs.cache-primary-key }}
+
+      - name: Pods Cache Save
+        uses: actions/cache/save@v4
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        with:
+          path: tests/ios/Pods
+          key: ${{ steps.pods-cache.outputs.cache-primary-key }}
+
+      - name: Firestore Emulator Cache Save
+        uses: actions/cache/save@v4
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        with:
+          path: ~/.cache/firebase/emulators
+          key: ${{ steps.firestore-emulator-cache.outputs.cache-primary-key }}
+
+      - name: Metro Bundler Cache Save
+        uses: actions/cache/save@v4
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        with:
+          path: ${{ steps.workflow-variables.outputs.metro-cache }}
+          key: ${{ steps.metro-bundler-cache.outputs.cache-primary-key }}
diff --git a/.github/workflows/tests_e2e_other.yml b/.github/workflows/tests_e2e_other.yml
index 735e95d3a1..3853b516af 100644
--- a/.github/workflows/tests_e2e_other.yml
+++ b/.github/workflows/tests_e2e_other.yml
@@ -135,8 +135,8 @@ jobs:
           echo "metro-cache=$HOME/.metro" >> $GITHUB_OUTPUT
           echo "xcode-version=$(xcodebuild -version|tail -1|cut -f3 -d' ')" >> $GITHUB_OUTPUT
 
-      - uses: actions/cache@v4
-        name: Yarn Cache
+      - name: Yarn Cache Restore
+        uses: actions/cache/restore@v4
         id: yarn-cache
         with:
           path: .yarn/cache
@@ -171,13 +171,13 @@ jobs:
           max_attempts: 3
           command: gem update cocoapods xcodeproj
 
-      - uses: actions/cache@v4
-        name: Cache Pods
+      - name: Pods Cache Restore
+        uses: actions/cache/restore@v4
         id: pods-cache
         with:
-          path: tests/macos/Pods
-          key: ${{ runner.os }}-macos-pods-v2-${{ hashFiles('tests/macos/Podfile.lock') }}
-          restore-keys: ${{ runner.os }}-macos-pods-v2
+          path: tests/ios/Pods
+          key: ${{ runner.os }}-macos-pods-v3-${{ hashFiles('tests/ios/Podfile.lock') }}
+          restore-keys: ${{ runner.os }}-macos-pods-v3
 
       - name: Pod Install
         uses: nick-fields/retry@v3
@@ -187,8 +187,9 @@ jobs:
           max_attempts: 3
           command: yarn tests:macos:pod:install
 
-      - name: Cache Firestore Emulator
-        uses: actions/cache@v4
+      - name: Firestore Emulator Cache Restore
+        uses: actions/cache/restore@v4
+        id: firestore-emulator-cache
         with:
           path: ~/.cache/firebase/emulators
           key: firebase-emulators-v1-${{ github.run_id }}
@@ -217,8 +218,9 @@ jobs:
           ccache -s
         shell: bash
 
-      - name: Metro Bundler Cache
-        uses: actions/cache@v4
+      - name: Metro Bundler Cache Restore
+        uses: actions/cache/restore@v4
+        id: metro-bundler-cache
         with:
           path: ${{ steps.workflow-variables.outputs.metro-cache }}
           key: ${{ runner.os }}-macos-metro-v1-${{ github.run_id }}
@@ -281,3 +283,31 @@ jobs:
         with:
           name: syslog-${{ matrix.iteration }}
           path: syslog.log
+
+      - name: Yarn Cache Save
+        uses: actions/cache/save@v4
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        with:
+          path: .yarn/cache
+          key: ${{ steps.yarn-cache.outputs.cache-primary-key }}
+
+      - name: Pods Cache Save
+        uses: actions/cache/save@v4
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        with:
+          path: tests/ios/Pods
+          key: ${{ steps.pods-cache.outputs.cache-primary-key }}
+
+      - name: Firestore Emulator Cache Save
+        uses: actions/cache/save@v4
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        with:
+          path: ~/.cache/firebase/emulators
+          key: ${{ steps.firestore-emulator-cache.outputs.cache-primary-key }}
+
+      - name: Metro Bundler Cache Save
+        uses: actions/cache/save@v4
+        if: "${{ github.ref == 'refs/heads/main' }}"
+        with:
+          path: ${{ steps.workflow-variables.outputs.metro-cache }}
+          key: ${{ steps.metro-bundler-cache.outputs.cache-primary-key }}

From 6906c939ae420dfbc06bc173bb65c53c00e09a77 Mon Sep 17 00:00:00 2001
From: Mike Hardy <github@mikehardy.net>
Date: Thu, 1 Jan 2026 10:01:08 -0500
Subject: [PATCH 2/3] chore(ci): cache restore/save failures should never break
 the build very occasionally, there are errors in the `hashFiles` function
 used to calculate cache keys, and this causes a build error that is a flake,
 not a valid CI failure signal

so, continue the workflow even if the caching setup has errors, as
that is a recoverable problem and the workflow may still have a valid
success outcome
---
 .github/workflows/create_test_patches.yml |  2 ++
 .github/workflows/docs.yml                |  2 ++
 .github/workflows/linting.yml             |  6 ++++++
 .github/workflows/tests_e2e_android.yml   |  8 ++++++++
 .github/workflows/tests_e2e_ios.yml       | 10 ++++++++++
 .github/workflows/tests_e2e_other.yml     |  8 ++++++++
 .github/workflows/tests_jest.yml          |  2 ++
 7 files changed, 38 insertions(+)

diff --git a/.github/workflows/create_test_patches.yml b/.github/workflows/create_test_patches.yml
index 1c2195b1d2..5519aa44fe 100644
--- a/.github/workflows/create_test_patches.yml
+++ b/.github/workflows/create_test_patches.yml
@@ -40,6 +40,7 @@ jobs:
       - uses: actions/cache/restore@v4
         name: Yarn Cache Restore
         id: yarn-cache
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-yarn-v1-${{ hashFiles('yarn.lock') }}
@@ -102,6 +103,7 @@ jobs:
       - uses: actions/cache/save@v4
         name: Yarn Cache Save
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-yarn-v1-${{ hashFiles('yarn.lock') }}
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 3689304f33..0f67f094f7 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -27,6 +27,7 @@ jobs:
       - uses: actions/cache/restore@v4
         name: Yarn Cache Restore
         id: yarn-cache
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-yarn-v1-${{ hashFiles('yarn.lock') }}
@@ -46,6 +47,7 @@ jobs:
       - uses: actions/cache/save@v4
         name: Yarn Cache Save
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-yarn-v1-${{ hashFiles('yarn.lock') }}
diff --git a/.github/workflows/linting.yml b/.github/workflows/linting.yml
index da7d4d0f32..54c77fbe61 100644
--- a/.github/workflows/linting.yml
+++ b/.github/workflows/linting.yml
@@ -33,6 +33,7 @@ jobs:
       - uses: actions/cache/restore@v4
         name: Yarn Cache Restore
         id: yarn-cache
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-yarn-v1-${{ hashFiles('yarn.lock') }}
@@ -54,6 +55,7 @@ jobs:
       - uses: actions/cache/save@v4
         name: Yarn Cache Save
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-yarn-v1-${{ hashFiles('yarn.lock') }}
@@ -73,6 +75,7 @@ jobs:
       - uses: actions/cache/restore@v4
         name: Yarn Cache Restore
         id: yarn-cache
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-yarn-v1-${{ hashFiles('yarn.lock') }}
@@ -89,6 +92,7 @@ jobs:
       - uses: actions/cache/save@v4
         name: Yarn Cache Save
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-yarn-v1-${{ hashFiles('yarn.lock') }}
@@ -108,6 +112,7 @@ jobs:
       - uses: actions/cache/restore@v4
         name: Yarn Cache Restore
         id: yarn-cache
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-yarn-with-website-v1-${{ hashFiles('yarn.lock') }}
@@ -131,6 +136,7 @@ jobs:
       - uses: actions/cache/save@v4
         name: Yarn Cache Save
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-yarn-with-website-v1-${{ hashFiles('yarn.lock') }}
diff --git a/.github/workflows/tests_e2e_android.yml b/.github/workflows/tests_e2e_android.yml
index 6a0b742cc4..188055fcc1 100644
--- a/.github/workflows/tests_e2e_android.yml
+++ b/.github/workflows/tests_e2e_android.yml
@@ -145,6 +145,7 @@ jobs:
       - name: Yarn Cache Restore
         uses: actions/cache/restore@v4
         id: yarn-cache
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-android-yarn-v1-${{ hashFiles('yarn.lock') }}
@@ -161,6 +162,7 @@ jobs:
       - name: Firestore Emulator Restore
         uses: actions/cache/restore@v4
         id: firestore-emulator-cache
+        continue-on-error: true
         with:
           path: ~/.cache/firebase/emulators
           key: firebase-emulators-v1-${{ github.run_id }}
@@ -172,6 +174,7 @@ jobs:
       - name: Gradle Cache Restore
         uses: actions/cache/restore@v4
         id: gradle-cache
+        continue-on-error: true
         with:
           path: ~/.gradle/caches
           key: ${{ runner.os }}-gradle-v1-${{ hashFiles('yarn.lock', 'tests/android/build.gradle', 'tests/android/app/build.gradle') }}
@@ -188,6 +191,7 @@ jobs:
       - name: Metro Bundler Cache Restore
         uses: actions/cache/restore@v4
         id: metro-bundler-cache
+        continue-on-error: true
         with:
           path: ${{ steps.workflow-variables.outputs.metro-cache }}
           key: ${{ runner.os }}-metro-v1-${{ github.run_id }}
@@ -248,6 +252,7 @@ jobs:
       - name: Yarn Cache Save
         uses: actions/cache/save@v4
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ steps.yarn-cache.outputs.cache-primary-key }}
@@ -255,6 +260,7 @@ jobs:
       - name: Firestore Emulator Cache Save
         uses: actions/cache/save@v4
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: ~/.cache/firebase/emulators
           key: ${{ steps.firestore-emulator-cache.outputs.cache-primary-key }}
@@ -262,6 +268,7 @@ jobs:
       - name: Gradle Cache Save
         uses: actions/cache/save@v4
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: ~/.gradle/caches
           key: ${{ steps.gradle-cache.outputs.cache-primary-key }}
@@ -269,6 +276,7 @@ jobs:
       - name: Metro Bundler Cache Save
         uses: actions/cache/save@v4
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: ${{ steps.workflow-variables.outputs.metro-cache }}
           key: ${{ steps.metro-bundler-cache.outputs.cache-primary-key }}
diff --git a/.github/workflows/tests_e2e_ios.yml b/.github/workflows/tests_e2e_ios.yml
index fed57374f4..ed06cbad17 100644
--- a/.github/workflows/tests_e2e_ios.yml
+++ b/.github/workflows/tests_e2e_ios.yml
@@ -144,6 +144,7 @@ jobs:
       - name: Yarn Cache Restore
         uses: actions/cache/restore@v4
         id: yarn-cache
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-ios-yarn-v1-${{ hashFiles('yarn.lock') }}
@@ -152,6 +153,7 @@ jobs:
       - name: Detox Framework Cache Restore
         uses: actions/cache/restore@v4
         id: detox-cache
+        continue-on-error: true
         with:
           path: ~/Library/Detox/ios
           key: ${{ runner.os }}-detox-framework-cache-${{ steps.workflow-variables.outputs.xcode-version }}
@@ -188,6 +190,7 @@ jobs:
       - name: Pods Cache Restore
         uses: actions/cache/restore@v4
         id: pods-cache
+        continue-on-error: true
         with:
           path: tests/ios/Pods
           key: ${{ runner.os }}-ios-pods-v3-${{ hashFiles('tests/ios/Podfile.lock') }}
@@ -204,6 +207,7 @@ jobs:
       - name: Firestore Emulator Restore
         uses: actions/cache/restore@v4
         id: firestore-emulator-cache
+        continue-on-error: true
         with:
           path: ~/.cache/firebase/emulators
           key: firebase-emulators-v1-${{ github.run_id }}
@@ -258,6 +262,7 @@ jobs:
       - name: Metro Bundler Cache Restore
         uses: actions/cache/restore@v4
         id: metro-bundler-cache
+        continue-on-error: true
         with:
           path: ${{ steps.workflow-variables.outputs.metro-cache }}
           key: ${{ runner.os }}-ios-metro-v1-${{ github.run_id }}
@@ -350,6 +355,7 @@ jobs:
       - name: Yarn Cache Save
         uses: actions/cache/save@v4
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ steps.yarn-cache.outputs.cache-primary-key }}
@@ -357,6 +363,7 @@ jobs:
       - name: Detox Framework Cache Save
         uses: actions/cache/save@v4
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: ~/Library/Detox/ios
           key: ${{ steps.detox-cache.outputs.cache-primary-key }}
@@ -364,6 +371,7 @@ jobs:
       - name: Pods Cache Save
         uses: actions/cache/save@v4
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: tests/ios/Pods
           key: ${{ steps.pods-cache.outputs.cache-primary-key }}
@@ -371,6 +379,7 @@ jobs:
       - name: Firestore Emulator Cache Save
         uses: actions/cache/save@v4
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: ~/.cache/firebase/emulators
           key: ${{ steps.firestore-emulator-cache.outputs.cache-primary-key }}
@@ -378,6 +387,7 @@ jobs:
       - name: Metro Bundler Cache Save
         uses: actions/cache/save@v4
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: ${{ steps.workflow-variables.outputs.metro-cache }}
           key: ${{ steps.metro-bundler-cache.outputs.cache-primary-key }}
diff --git a/.github/workflows/tests_e2e_other.yml b/.github/workflows/tests_e2e_other.yml
index 3853b516af..35bdcfc661 100644
--- a/.github/workflows/tests_e2e_other.yml
+++ b/.github/workflows/tests_e2e_other.yml
@@ -138,6 +138,7 @@ jobs:
       - name: Yarn Cache Restore
         uses: actions/cache/restore@v4
         id: yarn-cache
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-macos-yarn-v1-${{ hashFiles('yarn.lock') }}
@@ -174,6 +175,7 @@ jobs:
       - name: Pods Cache Restore
         uses: actions/cache/restore@v4
         id: pods-cache
+        continue-on-error: true
         with:
           path: tests/ios/Pods
           key: ${{ runner.os }}-macos-pods-v3-${{ hashFiles('tests/ios/Podfile.lock') }}
@@ -190,6 +192,7 @@ jobs:
       - name: Firestore Emulator Cache Restore
         uses: actions/cache/restore@v4
         id: firestore-emulator-cache
+        continue-on-error: true
         with:
           path: ~/.cache/firebase/emulators
           key: firebase-emulators-v1-${{ github.run_id }}
@@ -221,6 +224,7 @@ jobs:
       - name: Metro Bundler Cache Restore
         uses: actions/cache/restore@v4
         id: metro-bundler-cache
+        continue-on-error: true
         with:
           path: ${{ steps.workflow-variables.outputs.metro-cache }}
           key: ${{ runner.os }}-macos-metro-v1-${{ github.run_id }}
@@ -287,6 +291,7 @@ jobs:
       - name: Yarn Cache Save
         uses: actions/cache/save@v4
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ steps.yarn-cache.outputs.cache-primary-key }}
@@ -294,6 +299,7 @@ jobs:
       - name: Pods Cache Save
         uses: actions/cache/save@v4
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: tests/ios/Pods
           key: ${{ steps.pods-cache.outputs.cache-primary-key }}
@@ -301,6 +307,7 @@ jobs:
       - name: Firestore Emulator Cache Save
         uses: actions/cache/save@v4
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: ~/.cache/firebase/emulators
           key: ${{ steps.firestore-emulator-cache.outputs.cache-primary-key }}
@@ -308,6 +315,7 @@ jobs:
       - name: Metro Bundler Cache Save
         uses: actions/cache/save@v4
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: ${{ steps.workflow-variables.outputs.metro-cache }}
           key: ${{ steps.metro-bundler-cache.outputs.cache-primary-key }}
diff --git a/.github/workflows/tests_jest.yml b/.github/workflows/tests_jest.yml
index 4b84bce78c..caff239d3b 100644
--- a/.github/workflows/tests_jest.yml
+++ b/.github/workflows/tests_jest.yml
@@ -40,6 +40,7 @@ jobs:
       - uses: actions/cache/restore@v4
         name: Yarn Cache Restore
         id: yarn-cache
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-yarn-v1-${{ hashFiles('yarn.lock') }}
@@ -59,6 +60,7 @@ jobs:
       - uses: actions/cache/save@v4
         name: Yarn Cache Save
         if: "${{ github.ref == 'refs/heads/main' }}"
+        continue-on-error: true
         with:
           path: .yarn/cache
           key: ${{ runner.os }}-yarn-v1-${{ hashFiles('yarn.lock') }}

From 877036d280fd12ebc31ef51d1adbed51d013a62c Mon Sep 17 00:00:00 2001
From: Mike Hardy <github@mikehardy.net>
Date: Thu, 1 Jan 2026 10:14:55 -0500
Subject: [PATCH 3/3] chore(ci): firebase emulators are cross-platform, share
 cache across OSs

the downloaded/cached files are pure javascript and java, they may be
shared across operating systems safely
---
 .github/workflows/tests_e2e_android.yml | 4 ++++
 .github/workflows/tests_e2e_ios.yml     | 4 ++++
 .github/workflows/tests_e2e_other.yml   | 4 ++++
 3 files changed, 12 insertions(+)

diff --git a/.github/workflows/tests_e2e_android.yml b/.github/workflows/tests_e2e_android.yml
index 188055fcc1..be29cc203b 100644
--- a/.github/workflows/tests_e2e_android.yml
+++ b/.github/workflows/tests_e2e_android.yml
@@ -164,6 +164,8 @@ jobs:
         id: firestore-emulator-cache
         continue-on-error: true
         with:
+          # The firebase emulators are pure javascript and java, OS-independent
+          enableCrossOsArchive: true
           path: ~/.cache/firebase/emulators
           key: firebase-emulators-v1-${{ github.run_id }}
           restore-keys: firebase-emulators-v1
@@ -262,6 +264,8 @@ jobs:
         if: "${{ github.ref == 'refs/heads/main' }}"
         continue-on-error: true
         with:
+          # The firebase emulators are pure javascript and java, OS-independent
+          enableCrossOsArchive: true
           path: ~/.cache/firebase/emulators
           key: ${{ steps.firestore-emulator-cache.outputs.cache-primary-key }}
 
diff --git a/.github/workflows/tests_e2e_ios.yml b/.github/workflows/tests_e2e_ios.yml
index ed06cbad17..0462e80bd3 100644
--- a/.github/workflows/tests_e2e_ios.yml
+++ b/.github/workflows/tests_e2e_ios.yml
@@ -209,6 +209,8 @@ jobs:
         id: firestore-emulator-cache
         continue-on-error: true
         with:
+          # The firebase emulators are pure javascript and java, OS-independent
+          enableCrossOsArchive: true
           path: ~/.cache/firebase/emulators
           key: firebase-emulators-v1-${{ github.run_id }}
           restore-keys: firebase-emulators-v1
@@ -381,6 +383,8 @@ jobs:
         if: "${{ github.ref == 'refs/heads/main' }}"
         continue-on-error: true
         with:
+          # The firebase emulators are pure javascript and java, OS-independent
+          enableCrossOsArchive: true
           path: ~/.cache/firebase/emulators
           key: ${{ steps.firestore-emulator-cache.outputs.cache-primary-key }}
 
diff --git a/.github/workflows/tests_e2e_other.yml b/.github/workflows/tests_e2e_other.yml
index 35bdcfc661..98a41322f3 100644
--- a/.github/workflows/tests_e2e_other.yml
+++ b/.github/workflows/tests_e2e_other.yml
@@ -194,6 +194,8 @@ jobs:
         id: firestore-emulator-cache
         continue-on-error: true
         with:
+          # The firebase emulators are pure javascript and java, OS-independent
+          enableCrossOsArchive: true
           path: ~/.cache/firebase/emulators
           key: firebase-emulators-v1-${{ github.run_id }}
           restore-keys: firebase-emulators-v1
@@ -309,6 +311,8 @@ jobs:
         if: "${{ github.ref == 'refs/heads/main' }}"
         continue-on-error: true
         with:
+          # The firebase emulators are pure javascript and java, OS-independent
+          enableCrossOsArchive: true
           path: ~/.cache/firebase/emulators
           key: ${{ steps.firestore-emulator-cache.outputs.cache-primary-key }}