2 files changed, 19 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/runtime/BlazeServerStartupOptions.java b/src/main/java/com/google/devtools/build/lib/runtime/BlazeServerStartupOptions.java
index fe4fe8cfe1..3f6bcf1dc5 100644
--- a/src/main/java/com/google/devtools/build/lib/runtime/BlazeServerStartupOptions.java
+++ b/src/main/java/com/google/devtools/build/lib/runtime/BlazeServerStartupOptions.java
@@ -298,4 +298,12 @@ public class BlazeServerStartupOptions extends OptionsBase {
             + "Please do not use this flag."
   )
   public boolean useCustomExitCodeOnAbruptExit;
+
+  @Option(
+    name = "use_action_cache",
+    defaultValue = "true",
+    category = "server startup",
+    help = "Whether to use the action cache"
+  )
+  public boolean useActionCache;
 }
diff --git a/src/main/java/com/google/devtools/build/lib/runtime/BlazeWorkspace.java b/src/main/java/com/google/devtools/build/lib/runtime/BlazeWorkspace.java
index 98c56c48c8..e2d08b1298 100644
--- a/src/main/java/com/google/devtools/build/lib/runtime/BlazeWorkspace.java
+++ b/src/main/java/com/google/devtools/build/lib/runtime/BlazeWorkspace.java
@@ -21,6 +21,7 @@ import com.google.common.eventbus.EventBus;
 import com.google.common.eventbus.SubscriberExceptionHandler;
 import com.google.devtools.build.lib.actions.cache.ActionCache;
 import com.google.devtools.build.lib.actions.cache.CompactPersistentActionCache;
+import com.google.devtools.build.lib.actions.cache.StubActionCache;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
 import com.google.devtools.build.lib.analysis.WorkspaceStatusAction;
 import com.google.devtools.build.lib.analysis.config.BinTools;
@@ -219,6 +220,16 @@ public final class BlazeWorkspace {
    */
   public ActionCache getPersistentActionCache(Reporter reporter) throws IOException {
     if (actionCache == null) {
+      boolean useActionCache =
+          runtime
+              .getStartupOptionsProvider()
+              .getOptions(BlazeServerStartupOptions.class)
+              .useActionCache;
+      if (!useActionCache) {
+        reporter.handle(Event.info("Action cache disabled"));
+        actionCache = new StubActionCache();
+        return actionCache;
+      }
       try (AutoProfiler p = profiledAndLogged("Loading action cache", ProfilerTask.INFO, LOG)) {
         try {
           actionCache = new CompactPersistentActionCache(getCacheDirectory(), runtime.getClock());