Matt, just so I understand, you are saying if a node package such as mongodb provides connection pooling, they have to be implementing the package using a pooling system that is implemented in C?
On Wednesday, February 26, 2014 11:50:18 AM UTC-8, ajlopez wrote: > > Some more concrete example, to support my assertion, and to have a clear > picture of what can be used. > > I just found: > > https://github.com/felixge/node-mysql > > It manage a pool: > https://github.com/felixge/node-mysql/blob/master/lib/Pool.js > A pool manage a list of available Connection > https://github.com/felixge/node-mysql/blob/master/lib/Connection.js > and connection use require('net') > > That's the magic! ;-) The driver author uses LibUv indirectly. > > Angel "Java" Lopez > @ajlopez > > > > On Wed, Feb 26, 2014 at 4:45 PM, Angel Java Lopez > <[email protected]<javascript:> > > wrote: > >> Ummm... You can write a driver in JS code that use require('net'). And in >> that module, the socket I/O is, at the end, managed by LibUv. The same for >> require('fs') for file I/O. >> >> Am I right? >> >> And yes, the driver could be implemented in C, and then, it should call >> LibUv in some way. >> >> Angel "Java" Lopez >> @ajlopez >> >> >> >> On Wed, Feb 26, 2014 at 4:26 PM, Matt <[email protected] <javascript:>>wrote: >> >>> But unfortunately isn't how it works at all, unless the database driver >>> in question is using C libraries which use the thread pool (which most of >>> them don't these days). >>> >>> It's all about the event loop. Here's how an event loop works: >>> http://baudehlo.com/2013/02/14/how-an-event-loop-works/ >>> >>> >>> On Wed, Feb 26, 2014 at 12:53 PM, Reza Razavipour >>> <[email protected]<javascript:> >>> > wrote: >>> >>>> makes perfect sense, thank you >>>> >>>> Regards, >>>> Reza >>>> >>>> >>>> On Wed, Feb 26, 2014 at 9:16 AM, Angel Java Lopez >>>> <[email protected]<javascript:> >>>> > wrote: >>>> >>>>> JavaScript in Node is single thread. But async I/O is derived to >>>>> LibUv, that uses threads. Usually, a DB driver calls the database server, >>>>> using sockets. Then, that communication will be handle by LibUv, >>>>> returning >>>>> the results in a callback. Your single JS threads is available for other >>>>> tasks >>>>> >>>>> Angel "Java" Lopez >>>>> @ajlopez >>>>> >>>>> >>>>> >>>>> On Wed, Feb 26, 2014 at 2:14 PM, Reza Razavipour >>>>> <[email protected]<javascript:> >>>>> > wrote: >>>>> >>>>>> If node is single threaded and I can only be making one database call >>>>>> at any time, what is the point of having a pool of db connnections? >>>>>> >>>>>> -- >>>>>> -- >>>>>> Job Board: http://jobs.nodejs.org/ >>>>>> Posting guidelines: >>>>>> https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "nodejs" group. >>>>>> To post to this group, send email to [email protected]<javascript:> >>>>>> To unsubscribe from this group, send email to >>>>>> [email protected] <javascript:> >>>>>> For more options, visit this group at >>>>>> http://groups.google.com/group/nodejs?hl=en?hl=en >>>>>> >>>>>> --- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "nodejs" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to [email protected] <javascript:>. >>>>>> >>>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>>> >>>>> >>>>> -- >>>>> -- >>>>> Job Board: http://jobs.nodejs.org/ >>>>> Posting guidelines: >>>>> https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines >>>>> You received this message because you are subscribed to the Google >>>>> Groups "nodejs" group. >>>>> To post to this group, send email to [email protected]<javascript:> >>>>> To unsubscribe from this group, send email to >>>>> [email protected] <javascript:> >>>>> For more options, visit this group at >>>>> http://groups.google.com/group/nodejs?hl=en?hl=en >>>>> >>>>> --- >>>>> You received this message because you are subscribed to a topic in the >>>>> Google Groups "nodejs" group. >>>>> To unsubscribe from this topic, visit >>>>> https://groups.google.com/d/topic/nodejs/-_pSIeB7Vws/unsubscribe. >>>>> To unsubscribe from this group and all its topics, send an email to >>>>> [email protected] <javascript:>. >>>>> >>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>> >>>> >>>> -- >>>> -- >>>> Job Board: http://jobs.nodejs.org/ >>>> Posting guidelines: >>>> https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines >>>> You received this message because you are subscribed to the Google >>>> Groups "nodejs" group. >>>> To post to this group, send email to [email protected]<javascript:> >>>> To unsubscribe from this group, send email to >>>> [email protected] <javascript:> >>>> For more options, visit this group at >>>> http://groups.google.com/group/nodejs?hl=en?hl=en >>>> >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "nodejs" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected] <javascript:>. >>>> For more options, visit https://groups.google.com/groups/opt_out. >>>> >>> >>> -- >>> -- >>> Job Board: http://jobs.nodejs.org/ >>> Posting guidelines: >>> https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines >>> You received this message because you are subscribed to the Google >>> Groups "nodejs" group. >>> To post to this group, send email to [email protected]<javascript:> >>> To unsubscribe from this group, send email to >>> [email protected] <javascript:> >>> For more options, visit this group at >>> http://groups.google.com/group/nodejs?hl=en?hl=en >>> >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "nodejs" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected] <javascript:>. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >> >> > -- -- Job Board: http://jobs.nodejs.org/ Posting guidelines: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines You received this message because you are subscribed to the Google Groups "nodejs" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en --- You received this message because you are subscribed to the Google Groups "nodejs" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
