>
> If I stay with the current MongoDB server 2.6, Mango should be fine for a 
> time? The breakage you mentioned should not occur until 2.8?
>

To my knowledge MongoDB has no deprecation policy regarding the wire 
protocol, so it's impossible to say how long they will keep supporting 
older versions. My best guess would be as long as enterprise customers are 
willing to pay for it. The official drivers check the wire protocol and/or 
server version, and use different code paths to handle them (which is 
obviously very labour intensive). So Mango may keep working for a long 
time, break suddenly, and/or perform operations with different semantics 
and/or slower than the official drivers. One recent example for MongoDB 
2.7.x would be the use of commands to get index and collection information, 
which Mango has not been updated for.

--
sebastian

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