# 68. GiST Indexes

- [64.1. Introduction](https://docs.postgresql.tw/15/internals/gist-indexes/introduction.md)
- [64.2. Built-in Operator Classes](https://docs.postgresql.tw/15/internals/gist-indexes/built-in-operator-classes.md)
- [64.3. Extensibility](https://docs.postgresql.tw/15/internals/gist-indexes/extensibility.md)
- [64.4. Implementation](https://docs.postgresql.tw/15/internals/gist-indexes/implementation.md)
- [64.5. Examples](https://docs.postgresql.tw/15/internals/gist-indexes/examples.md)