Mainnet Explorer Deep Health

Runs 4 sub-checks against the Callisto/Hasura database via a single batched GraphQL query: (1) Block gap detection scans last 1000 blocks for missing heights, (2) Transaction completeness verifies num_txs matches actual indexed count, (3) Last write freshness detects hung indexers by checking block timestamp age (DOWN >10min, DEGRADED >5min), (4) Receipt completeness samples recent transactions for missing receipt data. The worst sub-check status becomes the endpoint status. Designed to catch the exact failure modes encountered in production: silent schema drift, crashed workers, and stale cached heights.

Down

Environment

prod

Response Time

Average

0ms

Min

0ms

Max

0ms

p99

0ms

Uptime History

2 checks agoNow

Direct Links

Troubleshooting

Possible causes:

Callisto workers crashed or disconnected— Fix: Check running containers: docker ps; restart workers: docker compose restart worker-high worker-medium worker-low
Schema drift — missing columns causing silent INSERT failures— Fix: Check table schema: docker exec postgres psql -U postgres -d ethernal -c '\d block'; run pending migrations
Block gaps from indexer crash during sync— Fix: Detect gaps: SELECT height FROM block ORDER BY height DESC LIMIT 1000; backfill via job queue API
Receipt sync blocked by transaction_receipts schema mismatch— Fix: Check transaction_receipts table exists and has correct columns; re-run receipt sync jobs
Indexer hung but latest height cached (stale write)— Fix: Restart Callisto: docker compose restart callisto; verify blocks advancing: SELECT MAX(height) FROM block

Dependencies

Depends on Required by