Hi Everyone.
We are looking at a rather large fin-tech installation. But as scalability requirements are high we look at sharding of-course.
I have looked at many sources for Postgresql sharding, but we are a little confused as to shared with schema or databases or both.
So far our understanding:
SCHEMA.
PROS:
- seems native to PG
- backup seems easier
- connection pooling seems easier, as you can use same connection between shard.
CONS:
- schema changes seems litlle more complicated
- heard of backup and maintenance problems
- also some caching problems.
DATABASE:
PROS:
- schema changes litlle easier
- backup and administration seems more robust
CONS:
- heard of vacuum problems
- connection pooling is hard, as 100 shards would mean 100 poolsSo what is actually the right approach? If anyone could shed some light on my issue.
Thanks
