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Project	Deployment	Actions	Updated (UTC)
potlock-next-app	Ready	Preview, Comment	May 18, 2026 4:43am

Walkthrough

This PR hardens reliability across external API calls, RPC failover, and polling retry logic while optimizing cache TTLs. Five API routes now enforce request timeouts via maxDuration and fetchWithTimeout helpers; NEAR RPC is refactored to support multi-endpoint failover with cooldown tracking; polling uses stepped backoff; and static asset cache headers and ISR revalidation timings are extended.

Changes

Reliability and Performance Hardening

Sequence Diagram(s)

sequenceDiagram
  participant Route as API Route
  participant FWT as fetchWithTimeout
  participant AC as AbortController
  participant Ext as External Service
  Route->>FWT: fetch with timeout config
  FWT->>AC: create controller
  FWT->>Ext: fetch with abort signal
  alt Request succeeds
    Ext-->>FWT: response
    FWT-->>Route: return response
  else Timeout fires
    AC->>AC: abort signal
    FWT->>Ext: cancel request
    Ext-->>FWT: AbortError
    FWT-->>Route: throw error
  end
  FWT->>FWT: finally clear timer

sequenceDiagram
  participant Code as Caller
  participant nearRpc as nearRpc.query
  participant queryNRpc as queryNearRpc
  participant Providers as RPC Providers
  Code->>nearRpc: query request
  nearRpc->>queryNRpc: route through selector
  queryNRpc->>queryNRpc: sort by last success, skip cooldown
  loop Try providers in order
    queryNRpc->>Providers: attempt RPC call
    alt Success
      Providers-->>queryNRpc: response
      queryNRpc->>queryNRpc: record success index
      queryNRpc-->>nearRpc: return response
    else Failure
      Providers-->>queryNRpc: error
      queryNRpc->>queryNRpc: mark unavailable, record failure
    end
  end
  queryNRpc-->>nearRpc: throw last error if all fail

Estimated Code Review Effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Possibly Related PRs

• PotLock/potlock-nextjs-app#623: Introduces the PingPay and verify-tx API routes that this PR now hardens with timeout enforcement and error handling.
• PotLock/potlock-nextjs-app#541: Also modifies campaign page getStaticProps ISR revalidate behavior, overlapping with this PR's cache timing adjustments.
• PotLock/potlock-nextjs-app#530: Related changes to campaign page ISR revalidate timings, directly relevant to this PR's cache optimization layer.

Poem

🐰 Timeouts and failovers, oh what a sight,
API requests abort when delays get tight,
NEAR RPC hops around with cooldown grace,
While cache TTLs give static files more space,
Reliability blooms in the spring debugging light!

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