Scaled Backend Service at Telna

Sebastian Sastre

Fullstack Engineer
Software Architect
Software Engineer

Solving a critical production-only bug

During my tenure at Telna, a critical backend bug emerged, hinting at a cache inconsistency in the Voyage persistency framework. Despite external hires not resolving it, my curiosity led me to explore migrating to Mapless, a robust framework I had developed in 2014.

The weekend experiment turned into a successful Proof of Concept, impressing the architect.

The subsequent migration not only resolved the issue but also showcased the power of proactive problem-solving through strategic design. Both the operations and engineering teams celebrated the success.

As a result the company was able to scale traffic in this backend from 9Kops to 27Kops.

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