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SubscriberStreamGapStats

evm_fork_cache::reactive

Struct SubscriberStreamGapStats 

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pub struct SubscriberStreamGapStats { /* private fields */ }
Expand description

Notification loss observed on live subscriptions, and what it cost to heal.

A non-zero lagged_notifications means the subscriber could not keep up with its endpoint. That is recoverable — the missed window is refetched — but each occurrence buys an eth_getLogs, so a steadily climbing count is a signal to raise SubscriberConfig::log_channel_size rather than to keep paying.

Counts are cumulative for the subscriber’s lifetime, matching SubscriberRpcStats.

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impl SubscriberStreamGapStats

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pub const fn lagged_notifications(self) -> u64

Notifications dropped by the transport because a bounded channel filled.

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pub const fn undecodable_notifications(self) -> u64

Notifications that arrived but could not be decoded.

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pub const fn log_gaps_healed(self) -> u64

Canonical log gaps closed by refetching the exact missed range.

Each of these issued provider requests attributed to SubscriberRpcCause::GapBackfill.

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pub const fn header_gaps(self) -> u64

Gaps observed on the canonical block-header stream.

These are not refetched here: a consumer that walks a replacement header’s parent lineage back to retained canonical history recovers the skipped blocks on the next header it receives. The count exists so that self-healing is visible rather than assumed.

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pub const fn preconfirmation_gaps(self) -> u64

Gaps observed on a pre-confirmation log stream, each of which discarded the speculative snapshot rather than publishing an incomplete one.

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pub const fn total_gaps(self) -> u64

Every observed notification loss, across all stream kinds.

Trait Implementations§

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impl Clone for SubscriberStreamGapStats

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fn clone(&self) -> SubscriberStreamGapStats

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for SubscriberStreamGapStats

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impl Debug for SubscriberStreamGapStats

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

Formats the value using the given formatter. Read more
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impl Default for SubscriberStreamGapStats

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fn default() -> SubscriberStreamGapStats

Returns the “default value” for a type. Read more
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impl Eq for SubscriberStreamGapStats

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impl PartialEq for SubscriberStreamGapStats

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for SubscriberStreamGapStats

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