diff --git a/Cargo.lock b/Cargo.lock
index c3e84f40ba..81c15fbbd2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -914,6 +914,13 @@ dependencies = [
  "uuid",
 ]
 
+[[package]]
+name = "deno_cache"
+version = "0.1.0"
+dependencies = [
+ "deno_core",
+]
+
 [[package]]
 name = "deno_console"
 version = "0.62.0"
diff --git a/Cargo.toml b/Cargo.toml
index bb88cbaf30..633d18501c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,6 +12,7 @@ members = [
   "test_ffi",
   "test_util",
   "ext/broadcast_channel",
+  "ext/cache",
   "ext/console",
   "ext/crypto",
   "ext/fetch",
diff --git a/ext/cache/01_cache.js b/ext/cache/01_cache.js
new file mode 100644
index 0000000000..0ea93c3c0d
--- /dev/null
+++ b/ext/cache/01_cache.js
@@ -0,0 +1,107 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+/// <reference path="../../core/internal.d.ts" />
+
+((window) => {
+  const core = window.Deno.core;
+  const webidl = window.__bootstrap.webidl;
+  const {
+    SafeArrayIterator,
+    Symbol,
+    SymbolFor,
+    ObjectDefineProperty,
+    ObjectFromEntries,
+    ObjectEntries,
+    ReflectGet,
+    ReflectHas,
+    Proxy,
+  } = window.__bootstrap.primordials;
+
+  const _persistent = Symbol("[[persistent]]");
+
+  class CacheStorage {
+    #storage;
+
+    constructor() {
+      webidl.illegalConstructor();
+    }
+
+    get length() {
+      webidl.assertBranded(this, StoragePrototype);
+      return core.opSync("op_webstorage_length", this[_persistent]);
+    }
+
+    key(index) {
+      webidl.assertBranded(this, StoragePrototype);
+      const prefix = "Failed to execute 'key' on 'Storage'";
+      webidl.requiredArguments(arguments.length, 1, { prefix });
+      index = webidl.converters["unsigned long"](index, {
+        prefix,
+        context: "Argument 1",
+      });
+
+      return core.opSync("op_webstorage_key", index, this[_persistent]);
+    }
+
+    setItem(key, value) {
+      webidl.assertBranded(this, StoragePrototype);
+      const prefix = "Failed to execute 'setItem' on 'Storage'";
+      webidl.requiredArguments(arguments.length, 2, { prefix });
+      key = webidl.converters.DOMString(key, {
+        prefix,
+        context: "Argument 1",
+      });
+      value = webidl.converters.DOMString(value, {
+        prefix,
+        context: "Argument 2",
+      });
+
+      core.opSync("op_webstorage_set", key, value, this[_persistent]);
+    }
+
+    getItem(key) {
+      webidl.assertBranded(this, StoragePrototype);
+      const prefix = "Failed to execute 'getItem' on 'Storage'";
+      webidl.requiredArguments(arguments.length, 1, { prefix });
+      key = webidl.converters.DOMString(key, {
+        prefix,
+        context: "Argument 1",
+      });
+
+      return core.opSync("op_webstorage_get", key, this[_persistent]);
+    }
+
+    removeItem(key) {
+      webidl.assertBranded(this, StoragePrototype);
+      const prefix = "Failed to execute 'removeItem' on 'Storage'";
+      webidl.requiredArguments(arguments.length, 1, { prefix });
+      key = webidl.converters.DOMString(key, {
+        prefix,
+        context: "Argument 1",
+      });
+
+      core.opSync("op_webstorage_remove", key, this[_persistent]);
+    }
+
+    clear() {
+      webidl.assertBranded(this, StoragePrototype);
+      core.opSync("op_webstorage_clear", this[_persistent]);
+    }
+  }
+
+  window.__bootstrap.webStorage = {
+    localStorage() {
+      if (!localStorage) {
+        localStorage = createStorage(true);
+      }
+      return localStorage;
+    },
+    sessionStorage() {
+      if (!sessionStorage) {
+        sessionStorage = createStorage(false);
+      }
+      return sessionStorage;
+    },
+    Storage,
+  };
+})(this);
diff --git a/ext/cache/Cargo.toml b/ext/cache/Cargo.toml
new file mode 100644
index 0000000000..14e6efaa0a
--- /dev/null
+++ b/ext/cache/Cargo.toml
@@ -0,0 +1,17 @@
+# Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+[package]
+name = "deno_cache"
+version = "0.1.0"
+authors = ["the Deno authors"]
+edition = "2021"
+license = "MIT"
+readme = "README.md"
+repository = "https://github.com/denoland/deno"
+description = "Implementation of Cache API for Deno"
+
+[lib]
+path = "lib.rs"
+
+[dependencies]
+deno_core = { version = "0.144.0", path = "../../core" }
diff --git a/ext/cache/README.md b/ext/cache/README.md
new file mode 100644
index 0000000000..efd45cec0d
--- /dev/null
+++ b/ext/cache/README.md
@@ -0,0 +1,5 @@
+# deno_cache
+
+This crate implements the Cache API.
+
+Spec: https://console.spec.whatwg.org/
diff --git a/ext/cache/lib.rs b/ext/cache/lib.rs
new file mode 100644
index 0000000000..bd1aacffff
--- /dev/null
+++ b/ext/cache/lib.rs
@@ -0,0 +1,18 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+use deno_core::include_js_files;
+use deno_core::Extension;
+use std::path::PathBuf;
+
+pub fn init() -> Extension {
+  Extension::builder()
+    .js(include_js_files!(
+      prefix "deno:ext/cache",
+      "01_cache.js",
+    ))
+    .build()
+}
+
+pub fn get_declaration() -> PathBuf {
+  PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("lib.deno_console.d.ts")
+}