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6.16. Filter Caching and Performance

Updated: 3 Sep 2026, 10:06 PM EDT

The count beside a filter name in the left navigation is cached. How long depends on how heavily the filter is used:

Filter usage	Cache duration
Top 5% most viewed	5 minutes
75th–95th percentile	10 minutes
50th–75th percentile	30 minutes
Below 50th percentile	60 minutes

Two things worth knowing about how those tiers are set. They are recalculated once a day by a scheduled maintenance job, so a filter's tier reflects yesterday's usage. And only filters with Display count in Workspace switched on are ranked at all — if fewer than ten filters have usage data, every filter simply gets 5 minutes.

Never cache the workspace display count in Edit Filter > Options tab does not quite mean never. It takes the filter out of the tier schedule above and caps its count at a one-minute cache instead — so the number can still be up to a minute old, rather than up to an hour. Use it only where a nearly live count matters; it costs database work on almost every workspace load.

Caching only ever affects the count. Opening a filter always runs it fresh against the database — the rows you see are never served from a cache — and running it replaces the cached count. So a stale number in the left navigation corrects itself the moment you click it.

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