deps: replaced simplejson with much faster orjson implementation

requirements.txt

@@ -145,13 +145,12 b' nbconvert==7.2.9'
   tinycss2==1.2.1
     webencodings==0.5.1
   traitlets==5.9.0
+orjson==3.8.7
 pastescript==3.3.0
   paste==3.5.2
     six==1.16.0
   pastedeploy==3.0.1
   six==1.16.0
-pathlib2==2.3.7.post1
-  six==1.16.0
 premailer==3.10.0
   cachetools==5.3.0
   cssselect==1.2.0

rhodecode/lib/ext_json.py

@@ -1,10 +1,15 b''
 import datetime
 import decimal
 import functools
+# we keep simplejson for having dump functionality still
+# orjson doesn't support it
+import orjson
+import simplejson
+import orjson as json
 
-import simplejson as json
 
 from rhodecode.lib.datelib import is_aware
+from rhodecode.lib.str_utils import safe_str
 
 try:
     import rhodecode.translation
@@ -57,8 +62,22 b' def _obj_dump(obj):'
         raise TypeError(repr(obj) + " is not JSON serializable")
 
 
-json.dumps = functools.partial(json.dumps, default=_obj_dump, use_decimal=False)
-json.dump = functools.partial(json.dump, default=_obj_dump, use_decimal=False)
+json.dumps = functools.partial(json.dumps, default=_obj_dump, option=orjson.OPT_NON_STR_KEYS)
+json.dump = functools.partial(simplejson.dump, default=_obj_dump)
+
+
+def formatted_json(*args, **kwargs):
+    # alias for formatted json
+    opts = orjson.OPT_NON_STR_KEYS | orjson.OPT_INDENT_2 | orjson.OPT_SORT_KEYS
+    return functools.partial(json.dumps, option=opts)(*args, **kwargs)
+
 
-# alias for formatted json
-formatted_json = functools.partial(json.dumps, indent=4, sort_keys=True)
+def formatted_str_json(*args, **kwargs):
+    opts = orjson.OPT_NON_STR_KEYS | orjson.OPT_INDENT_2 | orjson.OPT_SORT_KEYS
+    closure = functools.partial(json.dumps, option=opts)
+    return safe_str(closure(*args, **kwargs))
+
+
+def str_json(*args, **kwargs):
+    closure = functools.partial(json.dumps)
+    return safe_str(closure(*args, **kwargs))