Re: [Prevayler-coders] Re: Configurable Transaction Pipeline (was Re: StrictTransactionCensor)

[Bill B. <bi...@mo...>]

Which is why I think crashing is a good alternative to a food taster for 
systems that don't want or can't support the overhead.  I do agree with 
you about snapshotting before upgrades.  So we are considering 
snapshotting on shutdown (for your reason) and backing up the snapshot 
on startup (to provide a kind of 'undo' for users).


Justin T. Sampson wrote:

>Bill Burdick wrote:
>
>  
>
>>What I meant by 'skip' was to proceed even though there was an 
>>exception, instead of crashing.
>>    
>>
>
>Still, your system will be inconsistent, because some transactions that 
>had previously run are not being successfully recovered. The best 
>practice is to always take a snapshot before upgrading any code 
>(whether transaction objects or prevalent system/domain objects), so 
>that none of your transactions ever run with different code than they 
>did originally.
>
>Cheers,
>Justin
>
>
>
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-- 
	Bill Burdick
	Bi...@mo...