feast-dev · franciscojavierarceo · Jan 23, 2026 · Jan 20, 2026 · Jan 20, 2026 · Jan 23, 2026
@@ -8,6 +8,51 @@ The Python feature server is an HTTP endpoint that serves features with JSON I/O
 
 There is a CLI command that starts the server: `feast serve`. By default, Feast uses port 6566; the port be overridden with a `--port` flag.
 
+### Performance Configuration
+
+For production deployments, the feature server supports several performance optimization options:
+
+```bash
+# Basic usage
+feast serve
+
+# Production configuration with multiple workers
+feast serve --workers -1 --worker-connections 1000 --registry_ttl_sec 60
+
+# Manual worker configuration
+feast serve --workers 8 --worker-connections 2000 --max-requests 1000
+```
+
+Key performance options:
+- `--workers, -w`: Number of worker processes. Use `-1` to auto-calculate based on CPU cores (recommended for production)
+- `--worker-connections`: Maximum simultaneous clients per worker process (default: 1000)
+- `--max-requests`: Maximum requests before worker restart, prevents memory leaks (default: 1000)
+- `--max-requests-jitter`: Jitter to prevent thundering herd on worker restart (default: 50)
+- `--registry_ttl_sec, -r`: Registry refresh interval in seconds. Higher values reduce overhead but increase staleness (default: 60)
+- `--keep-alive-timeout`: Keep-alive connection timeout in seconds (default: 30)
+
+### Performance Best Practices
+
+**Worker Configuration:**
+- For production: Use `--workers -1` to auto-calculate optimal worker count (2 × CPU cores + 1)
+- For development: Use default single worker (`--workers 1`)
+- Monitor CPU and memory usage to tune worker count manually if needed
+
+**Registry TTL:**
+- Production: Use `--registry_ttl_sec 60` or higher to reduce refresh overhead
+- Development: Use lower values (5-10s) for faster iteration when schemas change frequently
+- Balance between performance (higher TTL) and freshness (lower TTL)
+
+**Connection Tuning:**
+- Increase `--worker-connections` for high-concurrency workloads
+- Use `--max-requests` to prevent memory leaks in long-running deployments
+- Adjust `--keep-alive-timeout` based on client connection patterns
+
+**Container Deployments:**
+- Set appropriate CPU/memory limits in Kubernetes to match worker configuration
+- Use HTTP health checks instead of TCP for better application-level monitoring
+- Consider horizontal pod autoscaling based on request latency metrics
+
 ## Deploying as a service
 
 See [this](../../how-to-guides/running-feast-in-production.md#id-4.2.-deploy-feast-feature-servers-on-kubernetes) for an example on how to run Feast on Kubernetes using the Operator.

@@ -52,21 +52,42 @@
     type=click.INT,
     default=1,
     show_default=True,
-    help="Number of worker",
+    help="Number of worker processes. Use -1 to auto-calculate based on CPU cores",
+)
+@click.option(
+    "--worker-connections",
+    type=click.INT,
+    default=1000,
+    show_default=True,
+    help="Maximum number of simultaneous clients per worker process",
+)
+@click.option(
+    "--max-requests",
+    type=click.INT,
+    default=1000,
+    show_default=True,
+    help="Maximum number of requests a worker will process before restarting (prevents memory leaks)",
+)
+@click.option(
+    "--max-requests-jitter",
+    type=click.INT,
+    default=50,
+    show_default=True,
+    help="Maximum jitter to add to max-requests to prevent thundering herd on worker restart",
 )
 @click.option(
     "--keep-alive-timeout",
     type=click.INT,
-    default=5,
+    default=30,
     show_default=True,
-    help="Timeout for keep alive",
+    help="Timeout for keep alive connections (seconds)",
 )
 @click.option(
     "--registry_ttl_sec",
     "-r",
-    help="Number of seconds after which the registry is refreshed",
+    help="Number of seconds after which the registry is refreshed. Higher values reduce refresh overhead but increase staleness",
     type=click.INT,
-    default=5,
+    default=60,
     show_default=True,
 )
 @click.option(
@@ -102,11 +123,14 @@ def serve_command(
     type_: str,
     no_access_log: bool,
     workers: int,
-    metrics: bool,
+    worker_connections: int,
+    max_requests: int,
+    max_requests_jitter: int,
     keep_alive_timeout: int,
+    registry_ttl_sec: int,
     tls_key_path: str,
     tls_cert_path: str,
-    registry_ttl_sec: int = 5,
+    metrics: bool,
 ):
     """Start a feature server locally on a given port."""
     if (tls_key_path and not tls_cert_path) or (not tls_key_path and tls_cert_path):
@@ -115,12 +139,19 @@ def serve_command(
         )
     store = create_feature_store(ctx)
 
+    # Auto-calculate workers if -1 is specified
+    if workers == -1:
+        workers = max(1, (multiprocessing.cpu_count() * 2) + 1)
+
     store.serve(
         host=host,
         port=port,
         type_=type_,
         no_access_log=no_access_log,
         workers=workers,
+        worker_connections=worker_connections,
+        max_requests=max_requests,
+        max_requests_jitter=max_requests_jitter,
         metrics=metrics,
         keep_alive_timeout=keep_alive_timeout,
         tls_key_path=tls_key_path,

@@ -796,6 +796,9 @@ def start_server(
     port: int,
     no_access_log: bool,
     workers: int,
+    worker_connections: int,
+    max_requests: int,
+    max_requests_jitter: int,
     keep_alive_timeout: int,
     registry_ttl_sec: int,
     tls_key_path: str,
@@ -833,6 +836,9 @@ def start_server(
             "bind": f"{host}:{port}",
             "accesslog": None if no_access_log else "-",
             "workers": workers,
+            "worker_connections": worker_connections,
+            "max_requests": max_requests,
+            "max_requests_jitter": max_requests_jitter,
             "keepalive": keep_alive_timeout,
             "registry_ttl_sec": registry_ttl_sec,
         }

@@ -2639,11 +2639,14 @@ def serve(
         type_: str = "http",
         no_access_log: bool = True,
         workers: int = 1,
+        worker_connections: int = 1000,
+        max_requests: int = 1000,
+        max_requests_jitter: int = 50,
         metrics: bool = False,
         keep_alive_timeout: int = 30,
         tls_key_path: str = "",
         tls_cert_path: str = "",
-        registry_ttl_sec: int = 2,
+        registry_ttl_sec: int = 60,
     ) -> None:
         """Start the feature consumption server locally on a given port."""
         type_ = type_.lower()
@@ -2658,6 +2661,9 @@ def serve(
             port=port,
             no_access_log=no_access_log,
             workers=workers,
+            worker_connections=worker_connections,
+            max_requests=max_requests,
+            max_requests_jitter=max_requests_jitter,
             metrics=metrics,
             keep_alive_timeout=keep_alive_timeout,
             tls_key_path=tls_key_path,