Storing CouchDB Database in RAM¶

When using one of the methods below, the database data will be saved to a folder in temporary storage, and after the computer is turned off, the data will be deleted.

Here are instructions for saving the database in RAM for different methods of launching the database:

in linux with binary packages
in linux with docker-compose.yaml
in windows with binary packages
in windows with docker-compose.yaml

linux¶

binary packages¶

Start the database according to the instructions

Create a CouchDB folder in the temporary file storage:

sudo mkdir /dev/shm/couchdb

Add editing rights to this folder:

sudo chmod 777 /dev/shm/couchdb

Edit the database_dir parameter in the database configuration file /opt/couchdb/etc/default.ini:

[couchdb]
database_dir = ./../../dev/shm/couchdb

Restart the couchdb service:

sudo service couchdb restart

docker¶

Start the database according to the instructions (steps 1-3)

Example of docker-compose.yaml file with saving files in RAM:

version: "3.8"

services:
  couchserver:
    image: couchdb:3.4
    ports:
      - "5984:5984"
    environment:
      COUCHDB_USER: dev
      COUCHDB_PASSWORD: dev
    volumes:
      - /dev/shm/couchdb:/opt/couchdb/data
      - ./docker/couchdb.ini:/opt/couchdb/etc/local.ini

Run docker compose in the root directory to launch DB.

docker compose up

To stop the database, run the command:

docker compose down

windows¶

virtual hard disk¶

You need to create a virtual hard disk on which the database will be saved.

Open the command prompt using Win+R, type diskmgmt.msc, and press Enter.
Click Action > Create Virtual Hard Disk.
Specify any Location, set Size (e.g., 30 MB), choose VHD type and Fixed size.
Right-click the created disk (left pane), select Initialize Disk, choose GUID Partition Table.
Right-click the created disk (right pane), select New Simple Volume, Assign drive letter (e.g., K), click Next twice, then Finish.
Create a folder named couchdb in the created drive (K in our case) using File Explorer.