Struct BulkCallConfig 

pub struct BulkCallConfig {
    pub max_slots_per_call: usize,
    pub max_targets_per_call: usize,
    pub max_concurrent_calls: usize,
    pub point_read_threshold: usize,
    pub pre_shanghai_extractor: bool,
    pub dispatch: CallDispatch,
    pub max_slots_per_request: usize,
}

Tuning knobs for the call-override bulk storage fetcher.

The defaults target Geth-default RPC limits (50M gas per eth_call): 10,000 slots ≈ 27M gas, comfortably under the cap while leaving headroom for multicall dispatch overhead. Providers with higher caps can raise max_slots_per_call substantially (measure before relying on it — Alchemy accepted 30k slots/call in testing, bounded by request body size rather than gas; see docs/bulk-storage-extraction.md).

Fields

max_slots_per_call: usize

Maximum storage slots packed into one eth_call (across all targets in that call). ~2,664 gas per slot; keep the product under the provider’s eth_call gas cap.

max_targets_per_call: usize

Maximum distinct target contracts dispatched through one multicall (~8k gas of call/ABI overhead per target).

max_concurrent_calls: usize

Maximum eth_calls in flight at once when a request spans multiple calls.

point_read_threshold: usize

Requests with fewer than this many slots are routed to the fallback fetcher when one is installed (an eth_call costs slightly more than a single eth_getStorageAt on CU-metered providers). Ignored when no fallback is available.

pre_shanghai_extractor: bool

Use the PUSH0-free extractor for chains without Shanghai.

dispatch: CallDispatch

How chunks are shipped: one eth_call each, or batched through eth_callMany.

max_slots_per_request: usize

CallDispatch::CallMany only: maximum total slots per eth_callMany request. Slot keys are incompressible calldata (~64 bytes each in the JSON body), and providers cap request bodies — Alchemy rejects ~2.5 MB with HTTP 413. The default (25,000 ≈ 1.6 MB) stays inside that.

Trait Implementations

impl Clone for BulkCallConfig

fn clone(&self) -> BulkCallConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BulkCallConfig

impl Debug for BulkCallConfig

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

Formats the value using the given formatter.

impl Default for BulkCallConfig

fn default() -> Self

Returns the “default value” for a type.

impl Eq for BulkCallConfig

impl PartialEq for BulkCallConfig

fn eq(&self, other: &BulkCallConfig) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for BulkCallConfig