Availability and downtime
Availability and downtime lets you calculate time-based allowed downtime from period and availability in your browser.
QPS and concurrency
QPS and concurrency lets you estimate average concurrency as arrival rate times mean residence time in your browser.
QPS and concurrency
⌂ Inputs and results stay in this browser and are not automatically stored or sent.
Waiting for input
Input and conditions
Output
Waiting for input
Complete text result
How to use
Enter arrival rate and average time in the system, using seconds for the time.
For a stable system, average concurrency is rate × average time. It is not the peak concurrency, required CPU count, or a guaranteed safe connection-pool limit.
Examples
100Principles and limits
Each input is limited to 1,048,576 bytes, output to 33,554,432 bytes, and processing to 5,000 ms. Input is never silently truncated.
Guides
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