perf: migrate to orjson for performance

.gitignore

@@ -5,4 +5,9 @@
 /players.redb*
 
 /players*.json*
-/b50*.json*
+/b50*.json*
+
+/.python-version
+/uv.lock
+
+/.venv

pyproject.toml

@@ -0,0 +1,9 @@
+[project]
+name = "sdgb-utils-rs"
+version = "0.1.0"
+description = "Add your description here"
+readme = "README.md"
+requires-python = ">=3.12"
+dependencies = [
+    "orjson>=3.11.1",
+]

utils/export_players.py

@@ -1,4 +1,4 @@
-import json
+import orjson as json
 import hashlib
 from typing import Callable
 from datetime import datetime
@@ -7,7 +7,7 @@ from decimal import Decimal, getcontext
 SALT = b"Lt2N5xgjJOqRsT5qVt7wWYw6SqOPZDI7"
 
 with open("musicDB.json", "r", encoding="utf-8") as f:
-    music_db = json.load(f)
+    music_db = json.loads(f.read())
 
 music_db = {entry["id"]: entry for entry in music_db}
 
@@ -169,19 +169,17 @@ def process(
     output_file: str,
 ):
     record_time()
-    with open(input_file, "r", encoding="utf-8") as f:
-        data = json.load(f)
+    with open(input_file, "rb") as f:
+        data = json.loads(f.read())
     print(f"loaded, cost {record_time():.2f}s")
 
-    record_time()
     for entry in data:
         salted_hash_userid(entry)
         clean_fields(entry)
     print(f"processed, cost {record_time():.2f}s")
 
-    record_time()
-    with open(output_file, "w", encoding="utf-8") as f:
-        json.dump(data, f, ensure_ascii=False)
+    with open(output_file, "wb") as f:
+        f.write(json.dumps(data))
     print(f"written out, cost {record_time():.2f}s")
 
     return data