java - Mechanism to maintain service when internet connection is lost with application server -

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we have centralised web app , database (running on glassfish , oracle) accessed multiple stations distributed country.

at stations there data entered , read system (through browser).

when (external) connection goes down between station , centralized web app stations continue function - store , present data, when connection returns data pushed central server maintaining database integrity.

given willing change our app server or database if worth it, how best handled, there out of box solution this?

install servers @ individual locations, replicate want share across them "routinely", , leave of other centralized, non-vital tasks (like, say, reporting) on central system.

there not "out of box" solution. system centralized whatever reason it's centralized. you're asking decentralized. doing need reconsider why it's centralized in first place, , dependencies there because of centralization (such each site having instant access data @ of other sites).

address issues of can without, how long, , how share it, , can set autonomous sites. magnitude , complexity of process dependent upon application , services supplies remote users.


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