Struct LimitsConfig 

pub struct LimitsConfig {
    pub body_max: u64,
    pub request_timeout: Option<Duration>,
    pub drain_timeout: Duration,
    pub max_concurrency: Option<u32>,
}

Fields

body_max: u64

Max request body size. Accepts "10MB", "500KB", "2GB", raw byte count.

request_timeout: Option<Duration>

Per-request timeout for the handler. None = no timeout.

drain_timeout: Duration

Graceful shutdown timeout — on SIGTERM the server stops accepting new connections, then waits up to this long for in-flight requests to complete before dropping them. Default 10s matches SystemD’s typical drain window. Raise for long-poll / large-upload workloads, lower for fast-iteration deploys.

max_concurrency: Option<u32>

Maximum concurrent in-flight requests across the whole server. None = unlimited (Tokio’s default). When set, requests above the cap immediately return HTTP 503 instead of queueing — this protects against thundering-herd overload and lets a load balancer steer traffic to healthy peers.

Set in config/anvil.toml as [limits] max_concurrency = 500. Pick a value that matches the size of your DB pool × expected per-request DB ops; over-provisioning here just shifts the bottleneck elsewhere.

Trait Implementations

impl Clone for LimitsConfig

fn clone(&self) -> LimitsConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for LimitsConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for LimitsConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for LimitsConfig

where LimitsConfig: Default,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for LimitsConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.