BashDB

Simple filesytem-based database in bash.

Usage:

Run a single server with ./server.sh

Any number of clients can be run, with unique identifiers, like ./client.sh id_0.

Clients read commands from stdin, and forward them to the server. The server executes commands concurrently, and sends output back to the corresponding client.

Mutexes protect files from concurrent editing. A command will retry on an exponential backoff to obtain a mutex, and eventually timeout.

Supported commands, with examples:

• create_database library
• create_table library books title,pages,category
• insert library books Harry_Potter,1000,fiction
• select library books 1,3

The whole thing is hacky bash. Feedback / PRs / forks for general improvements or to improve brittleness are very welcome.