traefik/docs/content/middlewares/tcp/inflightconn.md

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# InFlightConn
Limiting the Number of Simultaneous connections.
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To proactively prevent services from being overwhelmed with high load, the number of allowed simultaneous connections by IP can be limited.
## Configuration Examples
```yaml tab="Docker"
labels:
- "traefik.tcp.middlewares.test-inflightconn.inflightconn.amount=10"
```
```yaml tab="Kubernetes"
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apiVersion: traefik.io/v1alpha1
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kind: MiddlewareTCP
metadata:
name: test-inflightconn
spec:
inFlightConn:
amount: 10
```
```yaml tab="Consul Catalog"
# Limiting to 10 simultaneous connections
- "traefik.tcp.middlewares.test-inflightconn.inflightconn.amount=10"
```
```yaml tab="File (YAML)"
# Limiting to 10 simultaneous connections.
tcp:
middlewares:
test-inflightconn:
inFlightConn:
amount: 10
```
```toml tab="File (TOML)"
# Limiting to 10 simultaneous connections
[tcp.middlewares]
[tcp.middlewares.test-inflightconn.inFlightConn]
amount = 10
```
## Configuration Options
### `amount`
The `amount` option defines the maximum amount of allowed simultaneous connections.
The middleware closes the connection if there are already `amount` connections opened.