GeoWebCache/geowebcache — Issue #84: Support configurable min/max caching
Author: ischneider
Created: 2011-11-30 23:34:45+00:00
State: open
Labels: New Feature, Task

The functionality would allow an optional minimum and maximum zoom level to be defined. Requests that are are outside of this range would pass through to the upstream service. The rationale for this feature is too reduce storage requirements especially at high zoom levels when normal WMS behavior performs adequately (since less data needs to be rendered).

To achieve the best performance and preserve the labeling enhancements that result from meta-tiling, pass-through requests will be cached temporarily. There are two criteria for this temporary cache expiration:

1. When the meta tile requests complete, the cached tile can be expired.
2. Some relatively short nominal time has passed.