Choosing the Right Spatial Index in PostGIS

The blog post discusses the importance of spatial indexes in PostGIS for quickly searching for objects in space and compares various types of spatial indexes, including GIST, SPGIST, and BRIN. It highlights the differences in index builds and query times for different types of spatial indexes, providing insights into when to use each type. The author recommends creating a spatial index for spatial data and suggests considering the newer SPGIST implementation over the traditional GIST, especially for uniform and non-overlapping data. Additionally, the use of BRIN is recommended for large tables with highly spatially correlated data.