From 3308cdde1cb9ecebda3fca28f20af6db4bb41016 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rodrigo=20Gir=C3=A3o=20Serr=C3=A3o?=
 <5621605+rodrigogiraoserrao@users.noreply.github.com>
Date: Tue, 23 May 2023 15:32:49 +0100
Subject: [PATCH] Use FIFOCache.

Related comments: https://github.com/Textualize/textual/pull/2604#discussion_r1202431626
---
 src/textual/suggester.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/textual/suggester.py b/src/textual/suggester.py
index b290b1804..619dbb470 100644
--- a/src/textual/suggester.py
+++ b/src/textual/suggester.py
@@ -4,6 +4,7 @@ from abc import ABC, abstractmethod
 from dataclasses import dataclass
 from typing import Iterable
 
+from ._cache import FIFOCache
 from .dom import DOMNode
 from .message import Message
 
@@ -26,7 +27,7 @@ class Suggester(ABC):
     See [`SuggestFromList`][textual.suggester.SuggestFromList] for an example.
     """
 
-    cache: dict[str, str | None] | None
+    cache: FIFOCache[str, str | None] | None
     """Suggestion cache, if used."""
 
     def __init__(self, use_cache: bool = True):
@@ -35,7 +36,7 @@ class Suggester(ABC):
         Args:
             use_cache: Whether to cache suggestion results.
         """
-        self.cache = {} if use_cache else None
+        self.cache = FIFOCache(1024) if use_cache else None
 
     async def _get_suggestion(self, requester: DOMNode, value: str) -> None:
         """Used by widgets to get completion suggestions.