Duh. My bad.
I read my couch messages inline with my node messages. I didn't check
the list and I assumed this was on the couch list, where it would
appear to be trolling.
Sorry to all (and to all good night).
On Wed, Dec 19, 2012 at 8:26 PM, Ted Young <t...@radicaldesigns.org> wrote:
> Mark I'm guessing he's talking about mysql, not couch. It's true that you
> can't run multiple simultaneous transactions over one mysql connection. But
> that's a mysql connection in any language, not just node (unless I'm missed
> something). Not a node-mysql expert, but your choices are:
>
> a) create a connection per request
> b) create a connection pool, for example with node-pool, and acquire and
> release a connection on each request
>
>
> Ted
>
> On Dec 19, 2012, at 7:44 PM, Mark Hahn <m...@hahnca.com> wrote:
>
> I wonder why there is no one care about it.
>
>
> I will assume you aren't a troll. I would think that almost all couch
> users know about ACID and use Couch understanding the trade-offs.
> CouchDB has distributed features that would not be possible with
> transactions. If transactions are necessary for your application then
> choose a DB with transactions.
>
> On Wed, Dec 19, 2012 at 7:37 PM, Jake Verbaten <rayn...@gmail.com> wrote:
>
> Transactions are trivial when supported by your database engine.
>
> Like [levelup's .batch()][1]
>
> var ops = [
> { type: 'del', key: 'father' }
> , { type: 'put', key: 'name', value: 'Yuri Irsenovich Kim' }
> , { type: 'put', key: 'dob', value: '16 February 1941' }
> , { type: 'put', key: 'spouse', value: 'Kim Young-sook' }
> , { type: 'put', key: 'occupation', value: 'Clown' }
> ]
>
> db.batch(ops, function (err) {
> if (err) return console.log('Ooops!', err)
> console.log('Great success dear leader!')
> })
>
> If your database driver doesn't give you a sensible clean api then just
> write one.
>
> If your database doesn't support transactions then your screwed.
>
> [1]: https://github.com/rvagg/node-levelup#batch
>
>
>
> On Wed, Dec 19, 2012 at 7:01 PM, Charlie Circle <xie...@gmail.com> wrote:
>
>
> For serious web applications, transaction is crucial.
>
> But node's asynchronous nature do not obey transaction rule, I wonder why
> there is no one care about it.
>
> In synchronous applications, you start your transaction, and do database
> operation step by step, when done, just commit it.
>
> While in node, you must start transaction a place, and commit it in a
> callback chain in a deep level.
>
> But it's not the worst thing, because node share a single connection in a
> process, we can not sure which operation is in what transaction, so all
> messed must.
>
> I've seen a solution in npm, which let you execute database operation in
> sequence, let us go back to synchronous age, not so scalable, right?
>
> Is there any new idea?
>
>
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