Performance and Limits

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 size: 15MB
  • This applies to both the source Postgres row, and the transformed row synced to the client.
• Number of concurrent connections per PowerSync Service instance: Limited to 3,000 by default.
• Replicated rows (Postgres -> PowerSync Service):
  • Expect a peak of around 2,000-4,000 operations/second for small rows, or 5MB/second for large rows.
  • This also applies to reprocessing sync rules or adding new tables.
  • 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 63 columns per table in the client schema, excluding the id column.