server: add TODO

server/src/tantivy.rs

@@ -194,6 +194,14 @@ impl TantivyConnection {
         query: &Query,
     ) -> Result<(Searcher, Box<dyn query::Query>), ServerError> {
         let index = self.get_index()?;
+        // TODO: only create one reader
+        // From https://tantivy-search.github.io/examples/basic_search.html
+        // "For a search server you will typically create one reader for the entire lifetime of
+        // your program, and acquire a new searcher for every single request."
+        //
+        // I think there's some challenge in making the reader work if we reindex, so reader my
+        // need to be stored indirectly, and be recreated on reindex
+        // I think creating a reader takes 200-300 ms.
         let reader = index.reader()?;
         let schema = index.schema();
         let searcher = reader.searcher();