From 8b73b1d37e842a64451cba08f83d2ef2009a4203 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Randy=20D=C3=B6ring?=
 <30527984+radoering@users.noreply.github.com>
Date: Sun, 14 Jun 2026 10:46:12 +0200
Subject: [PATCH] perf: caching

---
 src/poetry/mixology/term.py                | 13 +++++++++++--
 src/poetry/repositories/http_repository.py |  5 +++--
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/src/poetry/mixology/term.py b/src/poetry/mixology/term.py
index 3123f3e484e..d3309a6c355 100644
--- a/src/poetry/mixology/term.py
+++ b/src/poetry/mixology/term.py
@@ -8,6 +8,8 @@
 
 
 if TYPE_CHECKING:
+    from collections.abc import Callable
+
     from poetry.core.constraints.version import VersionConstraint
     from poetry.core.packages.dependency import Dependency
 
@@ -23,8 +25,15 @@ class Term:
     def __init__(self, dependency: Dependency, is_positive: bool) -> None:
         self._dependency = dependency
         self._positive = is_positive
-        self.relation = functools.lru_cache(maxsize=None)(self._relation)
-        self.intersect = functools.lru_cache(maxsize=None)(self._intersect)
+
+    # The caches are created lazily because most terms never need them.
+    @functools.cached_property
+    def relation(self) -> Callable[[Term], str]:
+        return functools.lru_cache(maxsize=None)(self._relation)
+
+    @functools.cached_property
+    def intersect(self) -> Callable[[Term], Term | None]:
+        return functools.lru_cache(maxsize=None)(self._intersect)
 
     @property
     def inverse(self) -> Term:
diff --git a/src/poetry/repositories/http_repository.py b/src/poetry/repositories/http_repository.py
index fad5d647744..a123db104e3 100644
--- a/src/poetry/repositories/http_repository.py
+++ b/src/poetry/repositories/http_repository.py
@@ -76,7 +76,8 @@ def __init__(
             pool_size=pool_size,
         )
         self._authenticator.add_repository(name, url)
-        self.get_page = functools.lru_cache(maxsize=None)(self._get_page)
+        self.get_page = functools.cache(self._get_page)
+        self._find_packages = functools.cache(self._find_packages_uncached)  # type: ignore[method-assign]
 
         self._lazy_wheel = config.get("solver.lazy-wheel", True)
         self._max_retries = config.get("requests.max-retries", 0)
@@ -178,7 +179,7 @@ def _is_version_too_recent(self, links: Iterable[Link]) -> bool:
                 return True
         return False
 
-    def _find_packages(
+    def _find_packages_uncached(
         self, name: NormalizedName, constraint: VersionConstraint
     ) -> list[Package]:
         """