I converted Python Bytes from Quart/Flask to the Rust-backed Robyn framework and benchmarked it with Locust. The result: no meaningful speed or memory improvement. Here's why framework maturity still wins.

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A real-world experiment converting the Python Bytes website from Quart/Flask (running on Granian) to the Rust-backed Robyn framework, benchmarked with Locust. Despite Robyn's impressive synthetic benchmarks (up to 25x faster), the migration produced no meaningful improvement in requests per second or latency, and Robyn actually consumed more memory. The conclusion: framework maturity, ecosystem depth, and flexible app server features like process recycling matter more than raw benchmark numbers for real applications where business logic dominates execution time.

Replacing Flask with Robyn wasn't worth it

Did Robyn improve speed or memory over Flask?

Why Flask’s maturity still beats Robyn’s speed

Was the Robyn experiment a waste of time?

<p>Hey,</p>
<p>Creator of Robyn here. What were you trying to migrate? I will be happy to have a look.</p>
