add redis database documentation

doc/database.md

@@ -1,28 +1,5 @@
+You have 2 choices for database backend:
 
-Postgres on Debian (as root)
+* [postgres](postgres.md)
 
-    # install as root
-    apt-get install --no-install-recommends postgresql postgresql-client
-
-
-Setting up postgres (as root)
-
-    # become postgres user
-    su postgres
-    # spawn postgres admin shell
-    psql 
-
-You'll get a prompt, enter the following:
-
-    CREATE ROLE srnd WITH LOGIN PASSWORD 'srnd';
-    CREATE DATABASE srnd WITH ENCODING 'UTF8' OWNER srnd;
-    \q
-
-For demo purposes we'll use these credentials.
-These are default values, please change them later.
-
-## important
-
-these credentials assume you are going to run using a user called `srnd`, if your username you plan to run the daemon as is different please change `srnd` to your username.
-
-Now run it, [next](running.md)
+* [redis](redis.md)

doc/postgres.md

@@ -0,0 +1,28 @@
+
+Postgres on Debian (as root)
+
+    # install as root
+    apt-get install --no-install-recommends postgresql postgresql-client
+
+
+Setting up postgres (as root)
+
+    # become postgres user
+    su postgres
+    # spawn postgres admin shell
+    psql 
+
+You'll get a prompt, enter the following:
+
+    CREATE ROLE srnd WITH LOGIN PASSWORD 'srnd';
+    CREATE DATABASE srnd WITH ENCODING 'UTF8' OWNER srnd;
+    \q
+
+For demo purposes we'll use these credentials.
+These are default values, please change them later.
+
+## important
+
+these credentials assume you are going to run using a user called `srnd`, if your username you plan to run the daemon as is different please change `srnd` to your username.
+
+Now run it, [next](running.md)

doc/redis.md

@@ -0,0 +1,35 @@
+# configuring redis database backend
+
+
+0) Install redis
+
+0.A) debian/ubuntu
+
+    # apt update
+    # apt install redis-server
+
+0.B) redhat
+
+    # yum install redis
+
+0.C) from source
+
+* see http://redis.io/download
+
+    
+
+1) Configuration
+
+In srnd.ini the database sections should look like this:
+
+    [database]
+    type=redis
+    schema=single
+    host=localhost
+    port=6379
+    user=
+    password=
+
+2) Run the daemon
+
+* see the [next step](running.md)