{"slug":"data-calc-x402tookit-com-littles-law-7e55c8","title":"Little's law L = rate x time in system","host":"data-calc.x402tookit.com","method":"GET","resource":"https://data-calc.x402tookit.com/littles-law","category":"other","description":"Little's law L = rate x time in system: solve for concurrency, throughput or latency given any two; sizes pools.","price_listed":0.02,"price_asked":0.02,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":836,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:137","eip155:42161","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"arrivalRate":50,"timeInSystem":200,"timeUnit":"ms"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"arrivalRate":{"description":"Throughput lambda: items entering (and leaving) per second","type":"number"},"itemsInSystem":{"description":"Average number L of items in the system (concurrency, connections, queue plus service)","type":"number"},"timeInSystem":{"description":"Average time W an item spends in the system (use timeUnit)","type":"number"},"timeUnit":{"description":"Unit of timeInSystem: ms, s (default), min or h","type":"string"}},"required":[],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"arrivalRatePerSecond":{"type":["null","number"]},"asOf":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"disclaimer":{"type":["null","string"]},"itemsInSystem":{"type":["null","number"]},"notChecked":{"items":{"type":"string"},"type":["array","null"]},"poolSizeAt50PercentUtilization":{"type":["null","number"]},"poolSizeAt70PercentUtilization":{"type":["null","number"]},"reasons":{"items":{"type":"string"},"type":["array","null"]},"solvedFor":{"type":["null","string"]},"source":{"type":["null","string"]},"summary":{"type":["null","string"]},"timeInSystemInUnit":{"type":["null","number"]},"timeInSystemSeconds":{"type":["null","number"]},"timeUnit":{"type":["null","string"]},"verdict":{"type":["null","string"]}},"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-21","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.02,"price_match":true,"latency_ms":836,"error":null}],"description_full":"Little's law L = rate x time in system: solve for concurrency, throughput or latency given any two; sizes pools.","last_updated":"2026-10-20T20:46:07.942Z","schemes":["exact"]}