It depends on the implementation. For example, the post mentions using Elasticsearch in production "which naturally supports this cursor stuff" but it has a max

It depends on the implementation. For example, the post mentions using Elasticsearch in production "which naturally supports this cursor stuff" but it has a max keep alive context duration of 24 hours[1] by default. This limit can be extended on a cluster level but it's unlikely they have it set to indefinite. Which means that their search context is likely only valid for 24 hours. [1] https://www.elastic.co/guide/en/elasticsearch/reference/current/search-search.html https://www.elastic.co/guide/en/elasticsearch/reference/curr...