diff --git a/CHANGELOG.md b/CHANGELOG.md
index adfb60d..1a3a70b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,23 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com), and this project adheres to [Semantic Versioning](https://semver.org).
 
+## [Unreleased]
+### Added
+* Add `CacheNamespaceConfigOption` to customize the cache namespace.
+
+### Changed
+* *Nothing*
+
+### Deprecated
+* *Nothing*
+
+### Removed
+* *Nothing*
+
+### Fixed
+* *Nothing*
+
+
 ## [8.5.0] - 2023-09-22
 ### Added
 * Improve `init` command's `--initial-api-key` flag, so that it can receive an optional value which will be used as the initial API key.
diff --git a/config/config.php b/config/config.php
index 5016bf7..c7f6da1 100644
--- a/config/config.php
+++ b/config/config.php
@@ -92,6 +92,7 @@
                 'Delete short URLs > Visits threshold' => Config\Option\Visit\VisitsThresholdConfigOption::class,
                 'Base path' => Config\Option\BasePathConfigOption::class,
                 'Timezone' => Config\Option\TimezoneConfigOption::class,
+                'Cache > namespace' => Config\Option\Cache\CacheNamespaceConfigOption::class,
                 'Swoole > Amount of task workers' => Config\Option\Worker\TaskWorkerNumConfigOption::class,
                 'Swoole > Amount of web workers' => Config\Option\Worker\WebWorkerNumConfigOption::class,
             ],
@@ -115,6 +116,7 @@
         'factories' => [
             Config\Option\BasePathConfigOption::class => InvokableFactory::class,
             Config\Option\TimezoneConfigOption::class => InvokableFactory::class,
+            Config\Option\Cache\CacheNamespaceConfigOption::class => InvokableFactory::class,
             Config\Option\Visit\VisitsThresholdConfigOption::class => InvokableFactory::class,
             Config\Option\Database\DatabaseDriverConfigOption::class => InvokableFactory::class,
             Config\Option\Database\DatabaseNameConfigOption::class => InvokableFactory::class,
diff --git a/src/Config/Option/Cache/CacheNamespaceConfigOption.php b/src/Config/Option/Cache/CacheNamespaceConfigOption.php
new file mode 100644
index 0000000..5df9e36
--- /dev/null
+++ b/src/Config/Option/Cache/CacheNamespaceConfigOption.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Installer\Config\Option\Cache;
+
+use Shlinkio\Shlink\Installer\Config\Option\BaseConfigOption;
+use Symfony\Component\Console\Style\StyleInterface;
+
+class CacheNamespaceConfigOption extends BaseConfigOption
+{
+    public function getEnvVar(): string
+    {
+        return 'CACHE_NAMESPACE';
+    }
+
+    public function ask(StyleInterface $io, array $currentOptions): string
+    {
+        return $io->ask(
+            'Prefix for cache entry keys. (Change this if you run multiple Shlink instances on this server, or they '
+            . 'share the same redis instance)',
+            'Shlink',
+        );
+    }
+}
diff --git a/test/Config/Option/Cache/CacheNamespaceConfigOptionTest.php b/test/Config/Option/Cache/CacheNamespaceConfigOptionTest.php
new file mode 100644
index 0000000..3ffc2c2
--- /dev/null
+++ b/test/Config/Option/Cache/CacheNamespaceConfigOptionTest.php
@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace ShlinkioTest\Shlink\Installer\Config\Option\Cache;
+
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\TestCase;
+use Shlinkio\Shlink\Installer\Config\Option\Cache\CacheNamespaceConfigOption;
+use Symfony\Component\Console\Style\StyleInterface;
+
+class CacheNamespaceConfigOptionTest extends TestCase
+{
+    private CacheNamespaceConfigOption $configOption;
+
+    public function setUp(): void
+    {
+        $this->configOption = new CacheNamespaceConfigOption();
+    }
+
+    #[Test]
+    public function returnsExpectedEnvVar(): void
+    {
+        self::assertEquals('CACHE_NAMESPACE', $this->configOption->getEnvVar());
+    }
+
+    #[Test]
+    public function expectedQuestionIsAsked(): void
+    {
+        $io = $this->createMock(StyleInterface::class);
+        $io->expects($this->once())->method('ask')->with(
+            'Prefix for cache entry keys. (Change this if you run multiple Shlink instances on this server, or they '
+            . 'share the same redis instance)',
+            'Shlink',
+        )->willReturn('Shlink');
+
+        $answer = $this->configOption->ask($io, []);
+
+        self::assertEquals('Shlink', $answer);
+    }
+}