We're evaluating solutions to ingest business app events and infrastructure logs. Document-ish JSON-ish "DB"/search engine seems like best solution, because no

We're evaluating solutions to ingest business app events and infrastructure logs. Document-ish JSON-ish "DB"/search engine seems like best solution, because no one does structured logs properly. Now we have to pick the stack. ELK, Loki + Graphana, Graylog or maybe just dump into MongoDB?