Re: [nodejs]will kilos setTimeout spend too much resourece?
Reasonable ! 在 2012年4月25日 上午10:30，alFReD NSH 写道： > I think for something like that you should decide how accurate you want to > be and use a function on an interval to remove all expired things. Like run > the function on every minute or every second, depending on your need. A A > lot of timers are not a good, and not that much accurate. > > > On Monday, 23 April 2012 13:49:08 UTC+8, Jason.桂林 wrote: >> >> I need to write a service use something like in memory cache, and I want >> to do `expire` things in setTimeout, will it very slow, If I expire too >> much things, about kilos to millions. >> >> -- >> Best regards, >> >> Jason Green >> 桂林 >> >> >> -- > 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 nodejs@googlegroups.com > To unsubscribe from this group, send email to > nodejs+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/nodejs?hl=en?hl=en > -- Best regards, Jason Green 桂林 -- 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 nodejs@googlegroups.com To unsubscribe from this group, send email to nodejs+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en
Re: [nodejs]will kilos setTimeout spend too much resourece?
I think for something like that you should decide how accurate you want to be and use a function on an interval to remove all expired things. Like run the function on every minute or every second, depending on your need. A A lot of timers are not a good, and not that much accurate. On Monday, 23 April 2012 13:49:08 UTC+8, Jason.桂林 wrote: > > I need to write a service use something like in memory cache, and I want > to do `expire` things in setTimeout, will it very slow, If I expire too > much things, about kilos to millions. > > -- > Best regards, > > Jason Green > 桂林 > > > -- 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 nodejs@googlegroups.com To unsubscribe from this group, send email to nodejs+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en
Re: [nodejs]will kilos setTimeout spend too much resourece?
Oh cool! and I found
setTimeout(console.log, 1000, 'hello world')
is much better than
setTimeout(function(){
console.log('hello world');
}, 1000)
在 2012年4月23日 下午2:32，Joran Greef 写道：
> If you pass a function reference to an existing function to setTimeout,
> and then call this function repeatedly, rather than creating a closure each
> setTimeout call, that will lower your memory and cpu overhead substantially.
>
>
> On Monday, April 23, 2012 7:49:08 AM UTC+2, Jason.桂林 wrote:
>>
>> I need to write a service use something like in memory cache, and I want
>> to do `expire` things in setTimeout, will it very slow, If I expire too
>> much things, about kilos to millions.
>>
>> --
>> Best regards,
>>
>> Jason Green
>> 桂林
>>
>>
>> --
> 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 nodejs@googlegroups.com
> To unsubscribe from this group, send email to
> nodejs+unsubscr...@googlegroups.com
> For more options, visit this group at
> http://groups.google.com/group/nodejs?hl=en?hl=en
>
--
Best regards,
Jason Green
桂林
--
Job Board: http://jobs.nodejs.org/
Posting guidelines:
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Re: [nodejs]will kilos setTimeout spend too much resourece?
If you pass a function reference to an existing function to setTimeout, and then call this function repeatedly, rather than creating a closure each setTimeout call, that will lower your memory and cpu overhead substantially. On Monday, April 23, 2012 7:49:08 AM UTC+2, Jason.桂林 wrote: > > I need to write a service use something like in memory cache, and I want > to do `expire` things in setTimeout, will it very slow, If I expire too > much things, about kilos to millions. > > -- > Best regards, > > Jason Green > 桂林 > > > -- 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 nodejs@googlegroups.com To unsubscribe from this group, send email to nodejs+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en
