WIP

Author: z3z1ma

src/dbt_core_interface/project.py

@@ -149,7 +149,7 @@ def __init__(
 
         self._pool: ThreadPoolExecutor | None = None
 
-        self.__compilation_cache: dict[str, str] = {}
+        self.__compilation_cache: dict[str, CompilationResult] = {}
 
         if load:
             self._parse_project()
@@ -352,11 +352,20 @@ def execute_raw_sql(self, sql: str) -> ExecutionResult:
         )
 
     def compile_sql(self, sql: str) -> CompilationResult:
-        """Compile SQL without execution."""
+        """Compile SQL without execution.
+
+        Leverages a compilation cache to avoid redundant parsing.
+        """
+        if sql in self.__compilation_cache:
+            return self.__compilation_cache[sql]
         with self._manifest_lock:
             temp_node, cleanup = self._create_temp_node(sql)
             try:
-                return self.compile_from_node(temp_node, update_depends_on=False)
+                response = self.compile_from_node(temp_node, update_depends_on=False)
+                self.__compilation_cache[sql] = response
+                if len(self.__compilation_cache) > 128:
+                    _ = self.__compilation_cache.pop(next(iter(self.__compilation_cache)))
+                return response
             finally:
                 cleanup()