ValoraDB

A simple in-memory database with transaction support and write-ahead logging.

Configuration

ValoraDB uses a simple JSON configuration file to manage its settings. The configuration file is named config.json and should be located in the same directory as the application executable.

Configuration Options

• wal: WAL-specific configuration
  • directory: Directory where WAL files are stored (default: ./data/wal)
  • segmentSize: Maximum size of each WAL segment in bytes (default: 16MB)

Example Configuration

{
  "wal": {
    "directory": "./data/wal",
    "segmentSize": 16777216
  }
}

Running ValoraDB

To start the database:

go run .

Or if you've built the binary:

./valoradb

Commands

ValoraDB supports the following commands:

• SET key value - Set a key to a value
• GET key - Get the value of a key
• DEL key - Delete a key
• EXISTS key - Check if a key exists
• TYPE key - Get the type of a key's value
• KEYS pattern - Find keys matching a pattern
• BEGIN - Start a transaction
• COMMIT - Commit a transaction
• ROLLBACK - Rollback a transaction
• ADD key value - Add a value to a key (numeric only)
• SUB key value - Subtract a value from a key (numeric only)
• MUL key value - Multiply a key by a value (numeric only)
• DIV key value - Divide a key by a value (numeric only)
• CLEAR - Clear all keys

Example

SET counter 10
ADD counter 5
GET counter  # Returns 15
BEGIN
SUB counter 2
GET counter  # Returns 13
ROLLBACK
GET counter  # Returns 15