diff --git a/src/experiments.ts b/src/experiments.ts
index 87168a1f716..909a9a89425 100644
--- a/src/experiments.ts
+++ b/src/experiments.ts
@@ -193,6 +193,11 @@ export const ALL_EXPERIMENTS = experiments({
     default: true,
     public: false,
   },
+  fdcrealtime: {
+    shortDescription: "Enable Firebase Data Connect realtime feature.",
+    default: false,
+    public: false,
+  },
 });
 
 export type ExperimentName = keyof typeof ALL_EXPERIMENTS;
diff --git a/src/init/features/dataconnect/sdk.spec.ts b/src/init/features/dataconnect/sdk.spec.ts
index 7c5365fa5c1..17e428614e9 100644
--- a/src/init/features/dataconnect/sdk.spec.ts
+++ b/src/init/features/dataconnect/sdk.spec.ts
@@ -23,6 +23,7 @@ import * as fsutils from "../../../fsutils";
 import * as auth from "../../../auth";
 import * as utils from "../../../utils";
 import * as prompt from "../../../prompt";
+import * as experiments from "../../../experiments";
 
 const expect = chai.expect;
 
@@ -49,6 +50,10 @@ describe("addSdkGenerateToConnectorYaml", () => {
     };
   });
 
+  afterEach(() => {
+    sinon.restore();
+  });
+
   it("should add javascriptSdk for web platform", () => {
     addSdkGenerateToConnectorYaml(connectorInfo, connectorYaml, app);
     expect(connectorYaml.generate?.javascriptSdk).to.deep.equal([
@@ -120,6 +125,35 @@ describe("addSdkGenerateToConnectorYaml", () => {
       },
     ]);
   });
+
+  it("should conditionally inject clientCache if fdcrealtime is enabled", () => {
+    sinon.stub(experiments, "isEnabled").withArgs("fdcrealtime").returns(true);
+    addSdkGenerateToConnectorYaml(connectorInfo, connectorYaml, app);
+    expect((connectorYaml.generate?.javascriptSdk as any)[0].clientCache).to.deep.equal({});
+  });
+
+  it("should NOT overwrite existing clientCache configuration", () => {
+    sinon.stub(experiments, "isEnabled").withArgs("fdcrealtime").returns(true);
+    connectorYaml.generate = {
+      javascriptSdk: [
+        {
+          outputDir: "../app/src/dataconnect-generated",
+          package: "@dataconnect/generated",
+          packageJsonDir: "../app",
+          react: false,
+          angular: false,
+          clientCache: {
+            type: "memory",
+          } as any,
+        },
+      ],
+    };
+    addSdkGenerateToConnectorYaml(connectorInfo, connectorYaml, app);
+    expect(connectorYaml.generate?.javascriptSdk).to.have.lengthOf(1);
+    expect((connectorYaml.generate?.javascriptSdk as any)[0].clientCache).to.deep.equal({
+      type: "memory",
+    });
+  });
 });
 
 describe("chooseApp", () => {
diff --git a/src/init/features/dataconnect/sdk.ts b/src/init/features/dataconnect/sdk.ts
index 5eba5e07aaf..8f98b8b6725 100644
--- a/src/init/features/dataconnect/sdk.ts
+++ b/src/init/features/dataconnect/sdk.ts
@@ -15,7 +15,9 @@ import {
   DartSDK,
   JavascriptSDK,
   KotlinSDK,
+  SwiftSDK,
 } from "../../../dataconnect/types";
+import * as experiments from "../../../experiments";
 import { FirebaseError } from "../../../error";
 import { isArray } from "lodash";
 import {
@@ -381,19 +383,23 @@ export function addSdkGenerateToConnectorYaml(
 
     case Platform.WEB: {
       const javascriptSdk: JavascriptSDK = {
-        outputDir: path.relative(connectorDir, path.join(appDir, `src/dataconnect-generated`)),
-        package: `@dataconnect/generated`,
-        packageJsonDir: path.relative(connectorDir, appDir),
-        react: false,
-        angular: false,
+        outputDir: path.relative(
+          connectorDir,
+          path.join(app.directory, "src/dataconnect-generated"),
+        ),
+        package: "@dataconnect/generated",
+        packageJsonDir: path.relative(connectorDir, app.directory),
+        react: app.frameworks?.includes(Framework.REACT) ?? false,
+        angular: app.frameworks?.includes(Framework.ANGULAR) ?? false,
       };
-      for (const f of app.frameworks || []) {
-        javascriptSdk[f] = true;
+      if (experiments.isEnabled("fdcrealtime")) {
+        javascriptSdk.clientCache = {};
       }
       if (!isArray(generate?.javascriptSdk)) {
         generate.javascriptSdk = generate.javascriptSdk ? [generate.javascriptSdk] : [];
       }
-      if (!generate.javascriptSdk.some((s) => s.outputDir === javascriptSdk.outputDir)) {
+      const existing = generate.javascriptSdk.find((s) => s.outputDir === javascriptSdk.outputDir);
+      if (!existing) {
         generate.javascriptSdk.push(javascriptSdk);
       }
       break;
@@ -403,39 +409,51 @@ export function addSdkGenerateToConnectorYaml(
         outputDir: path.relative(connectorDir, path.join(appDir, `lib/dataconnect_generated`)),
         package: "dataconnect_generated/generated.dart",
       };
+      if (experiments.isEnabled("fdcrealtime")) {
+        dartSdk.clientCache = {};
+      }
       if (!isArray(generate?.dartSdk)) {
         generate.dartSdk = generate.dartSdk ? [generate.dartSdk] : [];
       }
-      if (!generate.dartSdk.some((s) => s.outputDir === dartSdk.outputDir)) {
+      const existing = generate.dartSdk.find((s) => s.outputDir === dartSdk.outputDir);
+      if (!existing) {
         generate.dartSdk.push(dartSdk);
       }
       break;
     }
     case Platform.ANDROID: {
       const kotlinSdk: KotlinSDK = {
-        outputDir: path.relative(connectorDir, path.join(appDir, `src/main/kotlin`)),
+        outputDir: path.relative(connectorDir, path.join(app.directory, "src/main/kotlin")),
         package: `com.google.firebase.dataconnect.generated`,
       };
+      if (experiments.isEnabled("fdcrealtime")) {
+        kotlinSdk.clientCache = {};
+      }
       if (!isArray(generate?.kotlinSdk)) {
         generate.kotlinSdk = generate.kotlinSdk ? [generate.kotlinSdk] : [];
       }
-      if (!generate.kotlinSdk.some((s) => s.outputDir === kotlinSdk.outputDir)) {
+      const existing = generate.kotlinSdk.find((s) => s.outputDir === kotlinSdk.outputDir);
+      if (!existing) {
         generate.kotlinSdk.push(kotlinSdk);
       }
       break;
     }
     case Platform.IOS: {
-      const swiftSdk = {
+      const swiftSdk: SwiftSDK = {
         outputDir: path.relative(
           connectorDir,
           path.join(app.directory, `../FirebaseDataConnectGenerated`),
         ),
         package: "DataConnectGenerated",
       };
+      if (experiments.isEnabled("fdcrealtime")) {
+        swiftSdk.clientCache = {};
+      }
       if (!isArray(generate?.swiftSdk)) {
         generate.swiftSdk = generate.swiftSdk ? [generate.swiftSdk] : [];
       }
-      if (!generate.swiftSdk.some((s) => s.outputDir === swiftSdk.outputDir)) {
+      const existing = generate.swiftSdk.find((s) => s.outputDir === swiftSdk.outputDir);
+      if (!existing) {
         generate.swiftSdk.push(swiftSdk);
       }
       break;