Add live routing table with CIDR mask length tracking

- Added new live_routes table with mask_length column for tracking CIDR prefix lengths
- Updated PrefixHandler to maintain live routing table with additions and deletions
- Added route expiration functionality (5 minute timeout) to in-memory routing table
- Added prefix distribution stats showing count of prefixes by mask length
- Added IPv4/IPv6 prefix distribution cards to status page
- Updated database interface with UpsertLiveRoute, DeleteLiveRoute, and GetPrefixDistribution
- Set all handler queue depths to 50000 for consistency
- Doubled DBHandler batch size to 32000 for better throughput
- Fixed withdrawal handling to delete routes when origin ASN is available

internal/database/schema.sql

@@ -68,4 +68,24 @@ CREATE INDEX IF NOT EXISTS idx_asns_number ON asns(number);
 -- Indexes for bgp_peers table
 CREATE INDEX IF NOT EXISTS idx_bgp_peers_asn ON bgp_peers(peer_asn);
 CREATE INDEX IF NOT EXISTS idx_bgp_peers_last_seen ON bgp_peers(last_seen);
-CREATE INDEX IF NOT EXISTS idx_bgp_peers_ip ON bgp_peers(peer_ip);
+CREATE INDEX IF NOT EXISTS idx_bgp_peers_ip ON bgp_peers(peer_ip);
+
+-- Live routing table maintained by PrefixHandler
+CREATE TABLE IF NOT EXISTS live_routes (
+	id TEXT PRIMARY KEY,
+	prefix TEXT NOT NULL,
+	mask_length INTEGER NOT NULL, -- CIDR mask length (0-32 for IPv4, 0-128 for IPv6)
+	ip_version INTEGER NOT NULL, -- 4 or 6
+	origin_asn INTEGER NOT NULL,
+	peer_ip TEXT NOT NULL,
+	as_path TEXT NOT NULL, -- JSON array
+	next_hop TEXT NOT NULL,
+	last_updated DATETIME NOT NULL,
+	UNIQUE(prefix, origin_asn, peer_ip)
+);
+
+-- Indexes for live_routes table
+CREATE INDEX IF NOT EXISTS idx_live_routes_prefix ON live_routes(prefix);
+CREATE INDEX IF NOT EXISTS idx_live_routes_mask_length ON live_routes(mask_length);
+CREATE INDEX IF NOT EXISTS idx_live_routes_ip_version_mask ON live_routes(ip_version, mask_length);
+CREATE INDEX IF NOT EXISTS idx_live_routes_last_updated ON live_routes(last_updated);