2603.8 purging old records

schema.sql

@@ -31,3 +31,11 @@ CREATE TABLE IF NOT EXISTS connections (
     KEY idx_dst_port (dst_port),
     CONSTRAINT fk_conn_node FOREIGN KEY (node_id) REFERENCES nodes (id) ON DELETE CASCADE
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+CREATE TABLE IF NOT EXISTS settings (
+    key_name    VARCHAR(64)  NOT NULL,
+    value       TEXT         NOT NULL,
+    PRIMARY KEY (key_name)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+INSERT IGNORE INTO settings (key_name, value) VALUES ('retention_days', '7');