Hacker News new | past | comments | ask | show | jobs | submit login

I looked into Clickhouse for OLAP. Our main database would be PostgreSQL unfortunatly their MaterializedPostgresql does not support TOAST, which is a major downside, considering we are TEXT/JSONB heavy users.

Edit: I tested it but for some reason either the docs are strange or wrong. but TOAST tables are actually replicated?! or at least I see the data?




TEXT/JSONB are stored inline IIRC unless they hit a certain size limit at which point they'll be put into TOAST - so you'll see data in clickhouse but some big values might be missing.


do you know if it will in the future? or is this a clickhouse limit of their string data type?


ClickHouse has no limit on sting data length. MaterializedPostgreSQL engine is just very recent feature with not large adoption rate. I believe if community will use it frequently it will become more bulletproof and more edge cases will be supported. TOAST in replication protocol is just not trivial to implement.




Consider applying for YC's Spring batch! Applications are open till Feb 11.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: