# Scale and long-running readiness

The 4.4.2 gate models 100,000 clients and 300,000 bookings in bounded batches, validates deterministic identity keys/pagination and confirms required indexes for booking time/status/staff/customer and client lookup. Admin lists paginate and reporting queries are date-bounded.

For very large sites, use a real system cron, persistent object cache where appropriate, database monitoring, regular log retention and staging load tests on production-like hardware. Dataset size alone cannot predict speed: hosting CPU/I/O, other plugins, query cache and provider latency remain material.