René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Feature]: Improve performance by using a faster library for parsing json schemas","articleBody":"### Suggested Behavior\n\nUse `fastjsonschema` instead of `jsonschema`, or even `jsonschema-rs`. `jsonschema-rs` claims to be 30x to 390x faster than `jsonschema` (3x to 7x faster than `fastjsonschema`).\n\n### Why is this needed?\n\nI have an OpenAPI spec that's moderately big, roughly 1.6M and parsing it with `OpenAPI` takes about 15s on my computer. I unfortunately can't share it, but I can share the profiling on it.\n\nFor one-time use it would be fine, but we use it in tests to validate responses, so this adds quite a bit of runtime to tests.\n\n### References\n\nThis profiling of just loading the OpenAPI yaml file, using `OpenAPI.from_file_path(\"\u003cpath\u003e\")`\n\nThe part in blue is `jsonschema`.\n\n\u003cimg width=\"4272\" height=\"2005\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/6b1084ee-cc22-4c9d-8101-04984a77b35c\" /\u003e\n\nA bit more detail here: [x.txt](https://github.com/user-attachments/files/24676678/x.txt)\n\n### Would you like to implement a feature?\n\nNone","author":{"url":"https://github.com/mikicz","@type":"Person","name":"mikicz"},"datePublished":"2026-01-16T17:06:54.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/1086/openapi-core/issues/1086"}