mirror of
https://github.com/open-webui/open-webui.git
synced 2026-08-27 06:46:30 -05:00
Classic298andGitHub
b1bfc18762
Every chat request hands each builtin tool a fresh copy of its cached spec, because callers mutate what they get. That copy was a full deepcopy of a nested dict, repeated per tool per message. The builder now caches the spec already serialized, so a request only parses it back. Parsing is what produces the independent tree callers mutate, and the cached value becomes an immutable string, so a request can no longer reach the cached object at all. Measured on CPython 3.12 with a 1.1 KB spec and 20 builtin tools per request: | | before | after | |---|---|---| | stdlib json, the default | 276.2 us | 66.4 us | | orjson | 279.5 us | 37.5 us | Builtin specs are plain JSON by construction: pydantic normalizes every default before it reaches the schema, so a tuple, set, enum or datetime cannot appear in one, and an unserializable default is dropped rather than embedded.