Optimize AS detail queries and increase PrefixHandler batch size

- Increase PrefixHandler batch size from 20k to 25k (25% increase)
- Add missing index on origin_asn for live_routes table
- This index significantly speeds up AS detail page queries
- Add code to create missing indexes on existing databases

internal/database/database.go

@@ -127,6 +127,16 @@ func (d *Database) Initialize() error {
 		d.logger.Warn("Failed to VACUUM database", "error", err)
 	}
 
+	// Create any missing indexes for existing databases
+	missingIndexes := []string{
+		"CREATE INDEX IF NOT EXISTS idx_live_routes_origin_asn ON live_routes(origin_asn)",
+	}
+	for _, idx := range missingIndexes {
+		if err := d.exec(idx); err != nil {
+			d.logger.Warn("Failed to create index", "index", idx, "error", err)
+		}
+	}
+
 	return nil
 }
 

internal/database/schema.sql

@@ -94,3 +94,5 @@ CREATE INDEX IF NOT EXISTS idx_live_routes_last_updated ON live_routes(last_upda
 CREATE INDEX IF NOT EXISTS idx_live_routes_ipv4_range ON live_routes(v4_ip_start, v4_ip_end) WHERE ip_version = 4;
 -- Index to optimize COUNT(DISTINCT prefix) queries
 CREATE INDEX IF NOT EXISTS idx_live_routes_ip_mask_prefix ON live_routes(ip_version, mask_length, prefix);
+-- Index to optimize AS detail queries
+CREATE INDEX IF NOT EXISTS idx_live_routes_origin_asn ON live_routes(origin_asn);

internal/routewatch/prefixhandler.go

@@ -19,7 +19,7 @@ const (
 	prefixHandlerQueueSize = 100000
 
 	// prefixBatchSize is the number of prefix updates to batch together
-	prefixBatchSize = 20000
+	prefixBatchSize = 25000
 
 	// prefixBatchTimeout is the maximum time to wait before flushing a batch
 	// DO NOT reduce this timeout - larger batches are more efficient