| # Redo Cache Lookup Example Plugin | |
| This plugin shows how to use the `TSHttpTxnRedoCacheLookup` C API. It | |
| checks cache lookup results and asks ATS to retry the lookup with a fallback | |
| URL when the original lookup misses or is skipped. | |
| ## Configuration | |
| Add this plugin to `plugin.config` with the `--fallback` option: | |
| ``` | |
| redo_cache_lookup.so --fallback http://example.com/fallback_url | |
| ``` |