diff --git a/.github/workflows/many.yml b/.github/workflows/many.yml
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@@ -0,0 +1,38 @@
+# runs tests in a plain environment, many times
+on:
+    push:
+      branches:
+        - main
+    pull_request:
+  name: Test
+  jobs:
+    test-nocache:
+      continue-on-error: true
+      strategy:
+        matrix:
+          go-version: [1.23.x]
+          os: [ubuntu-latest, macos-latest]
+          repeat: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]
+      runs-on: ${{ matrix.os }}
+      steps:
+        - uses: actions/checkout@v4
+        - uses: actions/setup-go@v5
+          with:
+            go-version: ${{ matrix.go-version }}
+            cache: false
+        - run: go test ./...
+  
+    test-cache:
+      continue-on-error: true
+      strategy:
+        matrix:
+          go-version: [1.23.x]
+          os: [ubuntu-latest, macos-latest]
+          repeat: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]
+      runs-on: ${{ matrix.os }}
+      steps:
+        - uses: actions/checkout@v4
+        - uses: actions/setup-go@v5
+          with:
+            go-version: ${{ matrix.go-version }}
+        - run: go test ./...
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