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How do we test unreliable network conditions?

What are your approaches to testing systems in low-bandwidth, high-latency or intermittent environments?

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The question and its context

Before committing to a network architecture, we want to understand how it behaves under packet loss and disconnections. What should a small team measure first?

An illustrative perspective

Separate connection loss, latency and packet loss in your experiments. Record recovery behavior as well as the initial failure so another engineer can reproduce your findings.

Keep the exchange useful

Describe what you have observed, explain your reasoning and make room for another approach. Keep credentials and confidential information out of the conversation.