Data Freshness

The Base Screener processes real-time trading metrics from multiple data sources. Each data type has a different update frequency.

Update schedule

Data pipeline

Base L2 → Goldsky Subgraph → Neon Postgres (tokens + pairs)
                                    ↑
DexScreener API ──→ price-worker ──→ price_snapshots table
Honeypot.is API ──→ risk-worker ──→ tokens table (risk fields)
Basescan API    ──→ risk-worker ──→ tokens table (verification + holders)

Latency expectations

• New token discovery: Tokens appear within seconds of pair creation on-chain (Goldsky indexing)
• First price data: Available within 10 minutes of discovery (next price-worker cycle)
• First risk score: Available within 5 minutes of discovery (next risk-worker cycle)
• API query response: Typically < 100ms for cached data from Neon Postgres

Checking data freshness

Use the price.updatedAt and risk.updatedAt fields to verify when data was last refreshed:

graphql
{
  token(address: "0x...") {
    price { usd updatedAt }
    risk { score updatedAt }
  }
}