diff --git a/README.md b/README.md
index 682fda1..9e70654 100644
--- a/README.md
+++ b/README.md
@@ -73,6 +73,7 @@ Example:
 ```toml
 [daemon]
 # host = "localhost"  # default: "localhost" (use reverse proxy for public access)
+#                     # Use "0.0.0.0" for IPv4-only, "::" for IPv6-only (dual-stack depends on OS)
 # port = 8443  # default: 8443
 # log_level = "INFO"  # default: "INFO"
 # log_target = "stdout"  # default: "stdout", or "syslog", "file"
@@ -87,10 +88,13 @@ ssl_cert_file = "/etc/ddns-service/cert.pem"  # required if ssl = true
 ssl_key_file = "/etc/ddns-service/key.pem"  # required if ssl = true
 # proxy_header = ""  # default: "" (disabled), e.g. "X-Forwarded-For"
 # trusted_proxies = []  # default: [], e.g. ["127.0.0.1", "10.0.0.0/8"]
+# thread_pool_size = 10  # default: 10
+# request_timeout = 10  # default: 10 (seconds)
 
 [database]
 # backend = "sqlite"  # default: "sqlite", or "mariadb"
 path = "/var/lib/ddns-service/ddns.db"  # required for sqlite
+# pool_size = 5  # default: 5 (MariaDB connection pool size)
 
 [dns_service]
 # dns_server = "127.0.0.1"  # default: "127.0.0.1" (must be IP address)
@@ -276,6 +280,16 @@ ddns-service --daemon
 ddns-service --daemon --debug
 ```
 
+### Signals
+
+- **SIGHUP**: Reload configuration (all settings except database, host, port; SSL certs are reloaded)
+- **SIGTERM/SIGINT**: Graceful shutdown (waits up to 5 seconds for active requests)
+
+```bash
+# Reload config
+kill -HUP $(pidof ddns-service)
+```
+
 ## HTTP API
 
 ### Request
diff --git a/files/config.example.toml b/files/config.example.toml
index 35d3462..be75fcf 100644
--- a/files/config.example.toml
+++ b/files/config.example.toml
@@ -1,5 +1,6 @@
 [daemon]
 # host = "localhost"  # default, use reverse proxy for public access!
+#                     # Use "0.0.0.0" for IPv4-only, "::" for IPv6-only (dual-stack depends on OS)
 # port = 8443  # default
 # log_level = "INFO"  # default
 # log_target = "stdout"  # default, "stdout", "syslog" or "file"
@@ -14,6 +15,8 @@ ssl_cert_file = "/etc/ddns-service/cert.pem"  # required if ssl = true
 ssl_key_file = "/etc/ddns-service/key.pem"  # required if ssl = true
 # proxy_header = ""  # default (disabled), header name e.g. "X-Forwarded-For"
 # trusted_proxies = []  # default, list of trusted proxy IPs/CIDRs
+# thread_pool_size = 10  # default, max concurrent request handlers
+# request_timeout = 10  # default, socket timeout in seconds
 
 [database]
 # backend = "sqlite"  # default, "sqlite", or "mariadb"
@@ -23,6 +26,7 @@ path = "/var/lib/ddns-service/ddns.db"  # required for sqlite
 # user = "ddns"  # required for mariadb
 # password = "secret"  # required for mariadb
 # database = "ddns"  # required for mariadb
+# pool_size = 5  # default, MariaDB connection pool size
 
 [dns_service]
 # dns_server = "127.0.0.1"  # default, must be IP address