This talk examines the October 2024 Zalando outage, which resulted in severe revenue impact. The incident was triggered by an automated security scan that uncovered an unprotected GraphQL endpoint. This led to an unexpected amplification of requests, causing computationally expensive queries against the service in front of the search indices and ultimately overloading the Elasticsearch clusters. The prolonged impact highlighted difficulties in pinpointing the root cause of high load in Elasticsearch, and proved that even though a perfect storm is by definition a rare occurrence, it still should never be discarded. Sometimes, when you hear the hoofbeats, they are zebras after all.

Migrating a large mission-critical Elasticsearch cluster to the latest version of Elasticsearch came with quite some challenges. In this talk, we will highlight some surprises and learnings from this process.

An introduction to PostgreSQL within Zalando's context presented by Matthias Adler, new team lead of the Database as a Service team at Zalando.

Find the ways that social Entrepreneurs can use AI technology and what's relevant when developing and using these types of solutions.

A beginner-friendly segment providing a comprehensive overview of AI, emphasizing responsible use for local community benefits.

Discover simple yet powerful ways entrepreneurs can leverage AI technology, offering a unique perspective for newcomers to the field.