---
specification: API Commons Rate Limits
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/RateLimits
provider: ElectricSQL
providerId: electric-sql
created: '2026-06-12'
modified: '2026-06-12'
reconciled: true
tags:
  - Rate Limiting
  - Sync
  - Concurrency
description: Electric enforces concurrency limits on the sync service rather than traditional per-second rate limits; initial sync requests cap at 300 concurrent and live streaming requests at 10,000 concurrent, returning 503 when exceeded.
sources:
  - https://electric.ax/docs/api/config
headers:
  retryAfter: Retry-After
responseCodes:
  throttled: 503
limits:
  - name: Initial Sync Concurrent Requests
    scope: service
    metric: concurrent_requests
    limit: 300
    timeFrame: instant
  - name: Live Streaming Concurrent Requests
    scope: service
    metric: concurrent_requests
    limit: 10000
    timeFrame: instant
  - name: Shape Log Response Chunk Size
    scope: request
    metric: bytes
    limit: 10485760
    timeFrame: usage