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I have a current use case in which remote computers query a central PostgreSQL database over a internet connection (read-only). We would like to implement a "stand-alone" system for these terminals so that they will still be usable when internet connection is not available. Replication will have to be done over a slow (~10 Mbps) link.

It is only important that the data can be accessed read-only, it is not a problem if the data is somewhat outdated.

My current solution would be to install a PostgreSQL database on the remote computer which replicate the master server over the internet. The software will then query the local database. Based on the information from postgreSQL (especially this presentation) Slony seems to be the best solution. Is this true or are there other, better/simpler solution like streaming replication?

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