We're searching across vast amounts of data every day. None of that data is stored in a single system - due to its sheer size and to prevent data loss on node outages. But how does a distributed search look like? How is data aggregated and calculated that is placed on dozens of nodes? How is coordination working in a good state of a cluster? What happens if things go sideways and how does recovery within a cluster work? Using Elasticsearch as an example this talk shows a fair of examples of distributed communication, computation, storage and statefulness in order to give you a glimpse what is done to keep data safe and available, no matter if running on bare-metal, on k8s or virtualized instances.
