diff --git a/memcache/README.md b/memcache/README.md
new file mode 100644
index 00000000..7558a24a
--- /dev/null
+++ b/memcache/README.md
@@ -0,0 +1 @@
+# memcache
diff --git a/mongodb/README.md b/mongodb/README.md
new file mode 100644
index 00000000..6da8bd91
--- /dev/null
+++ b/mongodb/README.md
@@ -0,0 +1 @@
+# mongodb
diff --git a/mysql/README.md b/mysql/README.md
new file mode 100644
index 00000000..c64321e4
--- /dev/null
+++ b/mysql/README.md
@@ -0,0 +1 @@
+# mysql
diff --git a/postgres/README.md b/postgres/README.md
new file mode 100644
index 00000000..6c0f2128
--- /dev/null
+++ b/postgres/README.md
@@ -0,0 +1 @@
+# postgres
diff --git a/redis/README.md b/redis/README.md
new file mode 100644
index 00000000..bed95302
--- /dev/null
+++ b/redis/README.md
@@ -0,0 +1 @@
+# redis
diff --git a/sqlite3/README.md b/sqlite3/README.md
new file mode 100644
index 00000000..8be264fc
--- /dev/null
+++ b/sqlite3/README.md
@@ -0,0 +1 @@
+# sqlite3