pub const DEFAULT_AUDIENCE_CACHE_ENTRIES: u64 = 100_000; // 100_000u64Expand description
Default entry-count bound for AudienceIndex’s cache – see super::lakehouse_context.
One Uuid + a short audience string is roughly 100 bytes, so 100k entries is ~10 MB: a fixed
shape with no operational knob, mirroring analytics-web-srv/src/data_source_cache.rs’s
hardcoded .max_capacity(1000) rather than MICROMEGAS_METADATA_CACHE_MB’s per-entry-weight
variability.