Performance improvements (#5)

* enable delayed commits, nodelay

* add ramdisk

entrypoint.sh

@@ -1,16 +1,26 @@
 #!/bin/sh
 
 echo "Starting Docker..."
-sh -c "docker run -d -p 5984:5984 -p 5986:5986 couchdb:$INPUT_COUCHDB_VERSION"
+sh -c "docker run -d -p 5984:5984 -p 5986:5986 --tmpfs /ram_disk couchdb:$INPUT_COUCHDB_VERSION"
 
 # CouchDB container name
 export NAME=`docker ps --format "{{.Names}}" --last 1`
 
+# Enable delayed commits for better performance
+echo "Enabling delayed commits..."
+docker exec $NAME mkdir -p /opt/couchdb/etc/local.d
+docker exec $NAME sh -c 'echo "[couchdb]\ndelayed_commits = true" >> /opt/couchdb/etc/local.d/01-delayed-commits.ini'
+
+echo "Setting nodelay option"
+docker exec $NAME sh -c 'echo "[httpd]\nsocket_options = [{nodelay, true}]" >> /opt/couchdb/etc/local.d/02-performance.ini'
+
+echo "Configuring CouchDB to use RAM disk"
+docker exec $NAME sh -c 'echo "[couchdb]\ndatabase_dir = /ram_disk\nview_index_dir = /ram_disk" >> /opt/couchdb/etc/local.d/03-ram-disk.ini'
+
 # Enable Erlang query server
 if [ "$INPUT_ERLANG_QUERY_SERVER" = 'true' ]
 then
   echo "Enabling Erlang query server..."
-  docker exec $NAME mkdir -p /opt/couchdb/etc/local.d
   docker exec $NAME sh -c 'echo "[native_query_servers]\nerlang = {couch_native_process, start_link, []}" >> /opt/couchdb/etc/local.d/15-erlang-query-server.ini'
 fi