DashboardSnapshot

An immutable read of DashboardState at one point in time — everything DashboardView needs to draw one frame, with no further computation or I/O required.

Kept separate from DashboardState so rendering logic can be pure and unit-tested against a hand-built snapshot without touching the mutable store at all.

Synopsis

final class DashboardSnapshot

Source	DashboardSnapshot.php

Properties

Property	Type	Description
$avgLatencyMs	float	readonly.
$cpuSystemMs	float	readonly.
$cpuUserMs	float	readonly.
$errorRate	float	readonly.
$hasData	bool	readonly.
$latencySeries	array	readonly.
$maxLatencyMs	float	readonly.
$memoryPeakBytes	float	readonly.
$p95LatencyMs	float	readonly.
$recentErrors	array	readonly.
$recentSpans	array	readonly.
$requestsPerSecond	float	readonly.
$routeRows	array	readonly.
$throughputSeries	array	readonly.
$totalErrors	int	readonly.
$totalRequests	int	readonly.
$uptimeSeconds	int	readonly.
$workerRssBytes	float	readonly.

Constructor

__construct()

public function __construct(bool $hasData, int $uptimeSeconds, int $totalRequests, int $totalErrors, float $requestsPerSecond, float $errorRate, float $avgLatencyMs, float $p95LatencyMs, float $maxLatencyMs, float $cpuUserMs, float $cpuSystemMs, float $memoryPeakBytes, float $workerRssBytes, array<float> $throughputSeries, array<float> $latencySeries, list<array{route: string, count: int, avgMs: float, errorRate: float, cacheHitRate: float, lastSeenSecond: int}> $routeRows, list<array{second: int, traceId: string, name: string, statusCode: int, durationMs: float, isError: bool, statusMessage: string}> $recentSpans, list<array{second: int, traceId: string, name: string, statusCode: int, durationMs: float, isError: bool, statusMessage: string}> $recentErrors): mixed

most recent first

Parameter	Type	Description
$hasData	bool
$uptimeSeconds	int
$totalRequests	int
$totalErrors	int
$requestsPerSecond	float
$errorRate	float
$avgLatencyMs	float
$p95LatencyMs	float
$maxLatencyMs	float
$cpuUserMs	float
$cpuSystemMs	float
$memoryPeakBytes	float
$workerRssBytes	float
$throughputSeries	array``<``float``>	per-second request counts, chronological, one entry per second in the window
$latencySeries	array``<``float``>	per-second average latency (ms), chronological, aligned with $throughputSeries
$routeRows	list``<``array{route: string, count: int, avgMs: float, errorRate: float, cacheHitRate: float, lastSeenSecond: int}``>
$recentSpans	list``<``array{second: int, traceId: string, name: string, statusCode: int, durationMs: float, isError: bool, statusMessage: string}``>	most recent first
$recentErrors	list``<``array{second: int, traceId: string, name: string, statusCode: int, durationMs: float, isError: bool, statusMessage: string}``>	most recent first

Returns mixed