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| 16:30 |
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| 16:30 |
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travelr |
Are there good resources about transactions between services |
| 16:30 |
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_ollie |
the best resource is the sentence "not a good idea" :) |
| 16:31 |
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_ollie |
http://www.enterpriseintegrationpatterns.com/ramblings/18_starbucks.html |
| 16:31 |
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travelr |
_ollie: doesn't solve the problem though |
| 16:31 |
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_ollie |
right, but might make you look into other options. |
| 16:32 |
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travelr |
_ollie: I'll check the link, thanks. |
| 16:32 |
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_ollie |
you were not asking about solutions to a problem but evaluation of a solution btw. |
| 16:32 |
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travelr |
_ollie: I'm unsure if there are other solutions per se |
| 16:32 |
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| 16:32 |
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travelr |
_ollie: payment service, order service, balance service.. I want if the payment goes through, that the order enters the system and this is reflected in the balance records. |
| 16:33 |
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travelr |
_ollie: without tx, ....how |
| 16:33 |
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travelr |
With SQL it's simple. |
| 16:33 |
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_ollie |
I can't follow… |
| 16:33 |
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travelr |
Open transaction, do things, commit |
| 16:34 |
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_ollie |
I guess generally speaking, the solutions are usually around: embrace eventual consistency, use compensating actions. |
| 16:34 |
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travelr |
_ollie: eventuall consistency in this case would imply, I suppose, some sort of queue? |
| 16:35 |
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_ollie |
You're jumping topics and technology like crazy, not sure this is leading anywhere… |
| 16:37 |
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travelr |
I'm not jumping, you're suggesting eventual consistency... |
| 16:39 |
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| 16:40 |
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sfisque |
travelr you are discovering one of the issues with "rest everywhere" which seems like this decades epidemic |
| 16:41 |
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sfisque |
if you are envisioning some form of XA process, rest is probably NOT the solution to the specific problem you are facing |
| 16:41 |
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travelr |
sfisque: the problem is general to service orientation in general |
| 16:41 |
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sfisque |
not really. if you need some form of XA, then SOA is not a good solution |
| 16:41 |
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travelr |
sfisque: and I can't avoid it in full because, say, I don't process payments locally |
| 16:41 |
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sfisque |
what i'm saying is, fragment the problem, use rest where it makes good sense, use something else where appropriate |
| 16:42 |
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travelr |
sfisque: ok, so something else... |
| 16:42 |
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travelr |
I'm talking about transactions. |
| 16:42 |
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travelr |
That's my specific problem. |
| 16:43 |
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fumanchu_ |
http://www-db.cs.wisc.edu/cidr/cidr2007/papers/cidr07p15.pdf is a great overview of how to live without transactions |
| 16:43 |
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sfisque |
aye, i'm fully aware. and i've yet to see an SOA solution that provides good Tx boundary handling (especially in a n-stage commit/rollback context) |
| 16:43 |
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sfisque |
i will have to read that |
| 16:44 |
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travelr |
fumanchu_: thanks |
| 17:07 |
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sfisque |
anyone know if there is a restlet channel here on freenode. i tried #restlet but it came up empty |
| 17:56 |
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pdurbin |
searchbot: lucky restlet |
| 17:56 |
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searchbot |
pdurbin: http://restlet.org/ |
| 17:58 |
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sfisque |
aye, i was looking for a possible channel here in freenode |
| 17:59 |
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sfisque |
it seems they created one about 7 years ago, and it must have fizzled |
| 17:59 |
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pdurbin |
a channel fizzled? that's unpossible |
| 18:23 |
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pdurbin |
sfisque: so is restlet any good? I've never heard of it. |
| 18:32 |
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| 18:37 |
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sfisque |
dunno. i'm just having to fix something that exists in production. i've never used it before |
| 18:37 |
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sfisque |
it might be total crap for all i know |
| 18:44 |
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pdurbin |
heh. hopefully not |
| 18:44 |
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pdurbin |
they have a nice website at least :) |
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