diff --git a/src/config/stores/caches/constants.js b/src/config/stores/caches/constants.js
new file mode 100644
index 00000000..e23a6157
--- /dev/null
+++ b/src/config/stores/caches/constants.js
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2018-present Arctic Ice Studio <development@arcticicestudio.com>
+ * Copyright (C) 2018-present Sven Greb <development@svengreb.de>
+ *
+ * Project:    Nord Docs
+ * Repository: https://github.com/arcticicestudio/nord-docs
+ * License:    MIT
+ */
+
+/**
+ * @file Provides internally cache related store constants.
+ * @author Arctic Ice Studio <development@arcticicestudio.com>
+ * @author Sven Greb <development@svengreb.de>
+ * @since 0.2.0
+ */
+
+import { metadataNordDocs } from "data/project";
+
+/**
+ * The prefix for keys stored in the session/local storage.
+ *
+ * @constant {string}
+ * @since 0.2.0
+ */
+const SESSIONSTORAGE_KEY_PREFIX = `${metadataNordDocs.name}`;
+
+/**
+ * The separator for keys stored in the session/local storage.
+ *
+ * @constant {string}
+ * @since 0.2.0
+ */
+const SESSIONSTORAGE_KEY_SEPARATOR = ":";
+
+/**
+ * The session/local storage key for the theme mode.
+ *
+ * @constant {string}
+ * @since 0.2.0
+ */
+const SESSIONSTORAGE_KEY_THEME_MODE = `${SESSIONSTORAGE_KEY_PREFIX}${SESSIONSTORAGE_KEY_SEPARATOR}themeMode`;
+
+export { SESSIONSTORAGE_KEY_PREFIX, SESSIONSTORAGE_KEY_SEPARATOR, SESSIONSTORAGE_KEY_THEME_MODE };
diff --git a/src/utils/index.js b/src/utils/index.js
new file mode 100644
index 00000000..ce9b4653
--- /dev/null
+++ b/src/utils/index.js
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2018-present Arctic Ice Studio <development@arcticicestudio.com>
+ * Copyright (C) 2018-present Sven Greb <development@svengreb.de>
+ *
+ * Project:    Nord Docs
+ * Repository: https://github.com/arcticicestudio/nord-docs
+ * License:    MIT
+ */
+
+/**
+ * @file Provides utility functions and classes.
+ * @author Arctic Ice Studio <development@arcticicestudio.com>
+ * @author Sven Greb <development@svengreb.de>
+ * @since 0.2.0
+ */
+
+import { readSessionCache, writeSessionCache } from "./sessionCache";
+
+export { readSessionCache, writeSessionCache };
diff --git a/src/utils/sessionCache.js b/src/utils/sessionCache.js
new file mode 100644
index 00000000..4dcabc77
--- /dev/null
+++ b/src/utils/sessionCache.js
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2018-present Arctic Ice Studio <development@arcticicestudio.com>
+ * Copyright (C) 2018-present Sven Greb <development@svengreb.de>
+ *
+ * Project:    Nord Docs
+ * Repository: https://github.com/arcticicestudio/nord-docs
+ * License:    MIT
+ */
+
+/**
+ * @file Provides utility functions for session storage and caching.
+ * @author Arctic Ice Studio <development@arcticicestudio.com>
+ * @author Sven Greb <development@svengreb.de>
+ * @since 0.2.0
+ */
+
+/**
+ * Checks if the global session storage object is available in the current environment.
+ *
+ * @private
+ * @method hasSessionStorage
+ * @return {Boolean} `true` if the global session storage object is available, `false` otherwise.
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/Window/sessionStorage
+ * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects
+ */
+const hasSessionStorage = () => typeof window !== "undefined" && window.sessionStorage !== "undefined";
+
+/**
+ * Reads the value of the given key from the session storage (if available).
+ *
+ * @method readSessionCache
+ * @param  {string} key The name of the key from which the value should be read.
+ * @return {string|null} The value of the given key, `null` otherwise if the global session storage is not available in
+ * the current environment.
+ */
+const readSessionCache = key => {
+  if (hasSessionStorage()) {
+    return sessionStorage.getItem(key);
+  }
+  return null;
+};
+
+/**
+ * Writes the given key-value pair to the session storage (if available).
+ *
+ * @method writeSessionCache
+ * @param  {string} key The name of the key for the paired value.
+ * @param  {string} value The value for the given key.
+ * @return {void}, `true` if the value has been set, `false` otherwise if the global session storage is not available
+ * in the current environment.
+ */
+const writeSessionCache = (key, value) => {
+  if (hasSessionStorage()) {
+    sessionStorage.setItem(key, value);
+    return true;
+  }
+  return false;
+};
+
+export { readSessionCache, writeSessionCache };