Overview

Cache mechanism is a very effective method to improve the service accessing efficiency.

When users use GIS functions, they may encounter the following situations:

• The spatial data is complex, containing too many geometric objects, and the symbols to be rendered are complex, causing consuming a very long time to draw map. And because of a large amount of spatial data, reading data takes up large memory every time.
• The map or some areas are accessed frequently.
• There are much more read operations, but less write operations, the returned results are almost unchanged, ie., the spatial data changes less.

So SuperMap iServer provides all-around cache mechanism, including HTTP Cache, Request Cache of fully functional service and three types of map cache, to improve the accessing efficiency.

This article will help you understand the cache category, storage formats and versions through SuperMap iServer cache mechanism.

• Cache strategy
• How to open HTTP Cache
• How to open Request Cache
• Map cache
• How to use Distributed Map Tiling service