Add thread_pool_size and request_timeout config settings

src/ddns_service/config.py

@@ -141,6 +141,8 @@ def load_config(config_path):
     cfg["daemon"].setdefault("ssl", False)
     cfg["daemon"].setdefault("proxy_header", "")
     cfg["daemon"].setdefault("trusted_proxies", [])
+    cfg["daemon"].setdefault("thread_pool_size", 10)
+    cfg["daemon"].setdefault("request_timeout", 10)
 
     cfg.setdefault("database", {})
     cfg["database"].setdefault("backend", "sqlite")

src/ddns_service/server.py

@@ -8,6 +8,7 @@ import json
 import logging
 import signal
 import ssl
+from concurrent.futures import ThreadPoolExecutor
 from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
 from urllib.parse import parse_qs, urlparse
 
@@ -64,7 +65,7 @@ def _is_trusted_proxy(client_ip, trusted_networks):
 
 
 class DDNSServer(ThreadingHTTPServer):
-    """HTTP server with Application instance."""
+    """HTTP server with Application instance and thread pool."""
 
     def __init__(self, app, address):
         """
@@ -79,8 +80,21 @@ class DDNSServer(ThreadingHTTPServer):
         self.trusted_networks = _parse_trusted_proxies(
             app.config["daemon"].get("trusted_proxies", [])
         )
+        self.pool_size = app.config["daemon"]["thread_pool_size"]
+        self.request_timeout = app.config["daemon"]["request_timeout"]
+        self.executor = ThreadPoolExecutor(max_workers=self.pool_size)
         super().__init__(address, DDNSRequestHandler)
 
+    def process_request(self, request, client_address):
+        """Submit request to thread pool."""
+        request.settimeout(self.request_timeout)
+        self.executor.submit(self.process_request_thread, request, client_address)
+
+    def server_close(self):
+        """Shutdown thread pool and close server."""
+        self.executor.shutdown(wait=True)
+        super().server_close()
+
 
 class DDNSRequestHandler(BaseHTTPRequestHandler):
     """HTTP request handler for DDNS updates."""