diff --git a/conf/config.dev b/conf/config.dev
index fc3bde91..566b655e 100644
--- a/conf/config.dev
+++ b/conf/config.dev
@@ -28,6 +28,10 @@ enable-maintenance = 0
 localedir = YOUR_AUR_ROOT/web/locale
 ; In production, salt_rounds should be higher; suggested: 12.
 salt_rounds = 4
+cache = none
+; In docker, the memcached host is available. On a user's system,
+; this should be set to localhost (most likely).
+memcache_servers = memcached:11211
 
 [notifications]
 ; For development/testing, use /usr/bin/sendmail
diff --git a/docker-compose.yml b/docker-compose.yml
index 3500b8e9..56eff570 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -29,6 +29,13 @@ services:
     volumes:
       - ./cache:/cache
 
+  memcached:
+    image: aurweb:latest
+    init: true
+    command: /docker/scripts/run-memcached.sh
+    healthcheck:
+      test: "bash /docker/health/memcached.sh"
+
   mariadb:
     image: aurweb:latest
     init: true
@@ -136,6 +143,8 @@ services:
         condition: service_healthy
       mariadb:
         condition: service_healthy
+      memcached:
+        condition: service_healthy
     volumes:
       - mariadb_run:/var/run/mysqld # Bind socket in this volume.
       - mariadb_data:/var/lib/mysql
diff --git a/docker/health/memcached.sh b/docker/health/memcached.sh
new file mode 100755
index 00000000..00f8cd98
--- /dev/null
+++ b/docker/health/memcached.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+exec pgrep memcached
diff --git a/docker/php-entrypoint.sh b/docker/php-entrypoint.sh
index b4f6c631..1f3ed82b 100755
--- a/docker/php-entrypoint.sh
+++ b/docker/php-entrypoint.sh
@@ -7,6 +7,9 @@ bash $dir/test-mysql-entrypoint.sh
 sed -ri "s;^(aur_location) = .+;\1 = https://localhost:8443;" conf/config
 sed -ri 's/^(name) = .+/\1 = aurweb/' conf/config
 
+# Enable memcached.
+sed -ri 's/^(cache) = .+$/\1 = memcache/' conf/config
+
 sed -ri "s|^(git_clone_uri_anon) = .+|\1 = https://localhost:8443/%s.git|" conf/config.defaults
 sed -ri "s|^(git_clone_uri_priv) = .+|\1 = ssh://aur@localhost:2222/%s.git|" conf/config.defaults
 
@@ -21,6 +24,9 @@ sed -ri 's|^;?(access\.log) = .*$|\1 = /proc/self/fd/2|g' \
 sed -ri 's/^;?(extension=pdo_mysql)/\1/' /etc/php/php.ini
 sed -ri 's/^;?(open_basedir).*$/\1 = \//' /etc/php/php.ini
 
+# Use the sqlite3 extension line for memcached.
+sed -ri 's/^;(extension)=sqlite3$/\1=memcached/' /etc/php/php.ini
+
 python -m aurweb.initdb 2>/dev/null || /bin/true
 
 exec "$@"
diff --git a/docker/scripts/install-deps.sh b/docker/scripts/install-deps.sh
index 8d4525de..6edbff5a 100755
--- a/docker/scripts/install-deps.sh
+++ b/docker/scripts/install-deps.sh
@@ -14,6 +14,6 @@ pacman -Syu --noconfirm --noprogressbar \
     python-pytest-asyncio python-coverage hypercorn python-bcrypt \
     python-email-validator openssh python-lxml mariadb mariadb-libs \
     python-isort flake8 cgit uwsgi uwsgi-plugin-cgi php php-fpm \
-    python-asgiref uvicorn python-feedgen
+    python-asgiref uvicorn python-feedgen memcached php-memcached
 
 exec "$@"
diff --git a/docker/scripts/run-memcached.sh b/docker/scripts/run-memcached.sh
new file mode 100755
index 00000000..90784b0f
--- /dev/null
+++ b/docker/scripts/run-memcached.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+exec /usr/bin/memcached -u memcached -m 64 -c 1024 -l 0.0.0.0