The current Pro and Team plans of PowerSync Cloud have the following limits and expected performance.

The PowerSync Cloud Enterprise plan allows for limits to be customized.

  • Number of synced buckets per user: 1,000.
    • Sync requests where this number is exceeded will fail with a hard error.
    • We have plans to increase this limit.
  • Maximum row/document size: 15MB
    • This applies to both the source row/document, and the transformed row synced to the client.
  • Number of concurrent connections per PowerSync Service instance: Limited to 3,000 by default.
  • Replicated rows/documents (Source database -> PowerSync Service):
    • Expect a peak of around 2,000-4,000 operations/second for small rows/documents, or 5MB/second for large rows/documents.
    • This also applies to reprocessing sync rules or adding new tables/collections.
    • Smaller transactions are processed at around 60 transactions/second.
  • Synced rows (PowerSync Service -> Client):
    • Over 1M rows per client is supported, with no hard limit.
    • Expect a rate of around 2,000-20,000 operations/second/client, depending on the client.
    • Database size and initial sync time may impose practical limits on number of rows.
  • Storage size: A soft limit of 100GB for data stored on the PowerSync Service by default.
  • Number of unique users: No hard limit.
  • Number of tables: No hard limit, but having hundreds of tables may slow down startup and sync performance.
  • Number of columns per table: Hard limit of 1999 columns per table in the client schema, excluding the id column.