diff --git a/src/rfc3987_syntax/syntax_helpers.py b/src/rfc3987_syntax/syntax_helpers.py
index fcb3f32..2427b2f 100644
--- a/src/rfc3987_syntax/syntax_helpers.py
+++ b/src/rfc3987_syntax/syntax_helpers.py
@@ -1,3 +1,8 @@
+__all__ = [
+    "is_valid_syntax",
+]
+import functools
+from typing import Any
 from lark import Lark, ParseTree, exceptions
 
 from pathlib import Path
@@ -12,7 +17,7 @@
     "absolute_iri",
     "scheme",
     "irelative_ref",
-    "irelative_part"
+    "irelative_part",
     "ihier_part",
     "iauthority",
     "iuserinfo",
@@ -45,13 +50,24 @@
     "pct_encoded",
 ]
 
-grammar: str = load_grammar(RFC3987_SYNTAX_GRAMMAR_PATH)
 
-syntax_parser = Lark(grammar, start=["iri", "iri_reference", "absolute_iri"], parser=RFC3987_SYNTAX_PARSER_TYPE)
+@functools.lru_cache(maxsize=None)
+def get_grammar():
+    return load_grammar(RFC3987_SYNTAX_GRAMMAR_PATH)
+
+
+@functools.lru_cache(maxsize=None)
+def get_syntax_parser():
+    syntax_parser = Lark(
+        get_grammar(),
+        start=["iri", "iri_reference", "absolute_iri"],
+        parser=RFC3987_SYNTAX_PARSER_TYPE,
+    )
+    return syntax_parser
 
 
 def parse(term: str, value: str) -> ParseTree:
-    return syntax_parser.parse(value, start=term)
+    return get_syntax_parser().parse(value, start=term)
 
 
 def is_valid_syntax(term: str, value: str):
@@ -62,8 +78,9 @@ def is_valid_syntax(term: str, value: str):
         return False
 
 
+@functools.lru_cache(maxsize=None)
 def make_syntax_validator(rule_name):
-    parser = Lark(grammar, start=rule_name, parser=RFC3987_SYNTAX_PARSER_TYPE)
+    parser = Lark(get_grammar(), start=rule_name, parser=RFC3987_SYNTAX_PARSER_TYPE)
 
     def syntax_validator(text):
         try:
@@ -75,78 +92,13 @@ def syntax_validator(text):
     return syntax_validator
 
 
-is_valid_syntax_iri = make_syntax_validator("iri")
-
-is_valid_syntax_iri_reference = make_syntax_validator("iri_reference")
-
-is_valid_syntax_absolute_iri = make_syntax_validator("absolute_iri")
-
-is_valid_syntax_irelative_ref = make_syntax_validator("irelative_ref")
-
-is_valid_syntax_irelative_part = make_syntax_validator("irelative_part")
-
-is_valid_syntax_ihier_part = make_syntax_validator("ihier_part")
-
-is_valid_syntax_iauthority = make_syntax_validator("iauthority")
-
-is_valid_syntax_iuserinfo = make_syntax_validator("iuserinfo")
-
-is_valid_syntax_ihost = make_syntax_validator("ihost")
-
-is_valid_syntax_ireg_name = make_syntax_validator("ireg_name")
-
-is_valid_syntax_ipath = make_syntax_validator("ipath")
-
-is_valid_syntax_ipath_abempty = make_syntax_validator("ipath_abempty")
-
-is_valid_syntax_ipath_absolute = make_syntax_validator("ipath_absolute")
-
-is_valid_syntax_ipath_noscheme = make_syntax_validator("ipath_noscheme")
-
-is_valid_syntax_ipath_rootless = make_syntax_validator("ipath_rootless")
-
-is_valid_syntax_ipath_empty = make_syntax_validator("ipath_empty")
-
-is_valid_syntax_isegment = make_syntax_validator("isegment")
-
-is_valid_syntax_isegment_nz = make_syntax_validator("isegment_nz")
-
-is_valid_syntax_isegment_nz_nc = make_syntax_validator("isegment_nz_nc")
-
-is_valid_syntax_ipchar = make_syntax_validator("ipchar")
-
-is_valid_syntax_iquery = make_syntax_validator("iquery")
-
-is_valid_syntax_ifragment = make_syntax_validator("ifragment")
-
-is_valid_syntax_iunreserved = make_syntax_validator("iunreserved")
-
-is_valid_syntax_ucschar = make_syntax_validator("ucschar")
-
-is_valid_syntax_iprivate = make_syntax_validator("iprivate")
-
-is_valid_syntax_sub_delims = make_syntax_validator("sub_delims")
-
-is_valid_syntax_ip_literal = make_syntax_validator("ip_literal")
-
-is_valid_syntax_ipvfuture = make_syntax_validator("ipvfuture")
-
-is_valid_syntax_ipv6address = make_syntax_validator("ipv6address")
-
-is_valid_syntax_h16 = make_syntax_validator("h16")
-
-is_valid_syntax_ls32 = make_syntax_validator("ls32")
-
-is_valid_syntax_ipv4address = make_syntax_validator("ipv4address")
-
-is_valid_syntax_dec_octet = make_syntax_validator("dec_octet")
-
-is_valid_syntax_unreserved = make_syntax_validator("unreserved")
-
-is_valid_syntax_alpha = make_syntax_validator("alpha")
-
-is_valid_syntax_digit = make_syntax_validator("digit")
-
-is_valid_syntax_hexdig = make_syntax_validator("hexdig")
-
-is_valid_syntax_port = make_syntax_validator("port")
+def __getattr__(name: str) -> Any:
+    if name == "grammar":
+        return get_grammar()
+    if name == "syntax_parser":
+        return get_syntax_parser()
+    if name.startswith("is_valid_syntax_"):
+        term = name.removeprefix("is_valid_syntax_")
+        return make_syntax_validator(term)
+    msg = f"Attribute {name} not found"
+    raise AttributeError(msg, name=name)