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THE FEUTEX TOOLKIT

Database Replication Catchup Window

Estimate lag clearance while a primary continues generating changes.

Computer Systems workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaCatchup time = lag*1000/(apply-generate)

Made for real tasks

  • Estimate lag clearance while a primary continues generating changes.
Explore step-by-step workflows →

Worked example

Inputs

Queued changes
50 GB
New change rate
20 MB/s
Replica apply rate
70 MB/s

Expected results

Catchup time
1000 s

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter queued changes, new change rate, replica apply rate in the displayed units.
  2. Calculate the scenario, then compare it with measurements before changing a system.

Try this example

{
  "lag": 50,
  "generate": 20,
  "apply": 70
}

Accuracy and scope

Constant byte rates; not transaction-aware and excludes dependency stalls.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.