Do we have any tool to measure/simulate a large number of channels publish message simultaneously?
And what do you think about redis pubsub performance in comparing to ZeroMQ pubsub mechanism? Thanks. On Fri, Jul 13, 2012 at 12:52 PM, Thomas Blobaum <tblob...@gmail.com> wrote: > In your case if you are just publishing strings/numbers, creating some > network of channels by name could be useful. If you are publishing a > stringified json object, its probably not necessary to also use > different subscription channels because that data can be part of what > you send but you could still make use of them. > > > Thomas Blobaum > https://github.com/tblobaum > > > On Fri, Jul 13, 2012 at 12:29 AM, hd nguyen <nguyenhd2...@gmail.com> > wrote: > > Thanks Tim for your suggestion about subscriber part. > > > > Any suggestions for publisher part(one publisher for each ACTION or one > > publisher for ALL ACTION)? I want to hear about it. > > > > Thanks. > > > > > > On Fri, Jul 13, 2012 at 12:07 PM, Tim Smart <t...@fostle.com> wrote: > >> > >> Hello, > >> > >> I would definitely recommend just adding one listener and doing all your > >> routing > >> from there. Something like: > >> > >> redis.subscribe('channel1') > >> redis.subscribe('channel2') > >> > >> redis.on('message', function (channel, message) { > >> // emitter.emit(channel, message) > >> // > >> // -or > >> // > >> // if (methods[channel]) methods[channel](message) > >> // > >> // -or > >> // > >> // switch (channel) { > >> // case 'channel1': > >> // break > >> // case 'channel2': > >> // break > >> // } > >> }) > >> > >> The main reason being no matter how many clients you have, they will all > >> receive the same messages as each other; which means your clients will > be > >> doubling up on emit operations. > >> > >> Tim > >> > >> On Fri, Jul 13, 2012 at 11:43:25AM +0700, hd nguyen wrote: > >> > Hi all, > >> > > >> > I have a concern when using pubsub mechanism of redis in my real > >> > application. > >> > > >> > I built a MMO game with 5 servers (NodeJs) and use pubsub of Redis to > >> > broadcast game state between servers. > >> > > >> > But I concern which is the best practice to utilize this mechanism > >> > efficiently with a lot of users connect and interact simultaneously? > >> > > >> > I would love to hear your ideas about following problems: > >> > > >> > 1/ Should I create NEW channel for each action or just ONE channel for > >> > ALL > >> > actions? > >> > Ex: user1 connect to server1, user2-server2,...userN-serverN > >> > When user1 move/fight and lost his health, those action should be > >> > broadcast > >> > to other servers, so each time want to broadcast I should use: > >> > pub1.publish("pub1", "action data sent from pub1"); //just one channel > >> > for > >> > ALL actions > >> > OR > >> > pub1.publish("pub1_actionID", "action data sent from pub1"); // each > >> > channel for EACH action > >> > > >> > 2/ And in each servers we create a client to listen: > >> > //subscribe ALL channels from ALL OTHER servers > >> > client = redis.createClient(port, host); > >> > client.subscribe("pub1"); > >> > client.subscribe("pub2"); > >> > .... > >> > client.subscribe("pubN"); > >> > > >> > client.on("message", function(channel, message){ > >> > console.log(host + ":" + channel + ": " + message); > >> > }); > >> > > >> > As above snippet code, each server should be a client to listen ALL > >> > CHANNELS published by ALL other servers. > >> > > >> > But I concern whether I should use just ONE client to listen ALL > >> > channels > >> > or ONE client for EACH channel? > >> > //each subscribe for each channel > >> > client1 = redis.createClient(port, host); > >> > client2 = redis.createClient(port, host); > >> > client1.subscribe("pub1"); > >> > client2.subscribe("pub2"); > >> > .... > >> > client1.on("message", function(channel, message){ > >> > console.log(host + ":" + channel + ": " + message); > >> > }); > >> > client2.on("message", function(channel, message){ > >> > console.log(host + ":" + channel + ": " + message); > >> > }); > >> > ... > >> > 3/ Could you tell me how many connections redis can handle maximum in > a > >> > second? (each time we createClient() we should create a connection to > >> > Redis > >> > server, right? Does it take a lot of time and overhead?) > >> > > >> > 4/ Any tool to evaluate performance of pubsub mechanism for a MMO game > >> > with > >> > multiple requests at the same time? > >> > > >> > Thanks for your time. > >> > > >> > -- > >> > Nguyen Hai Duy > >> > Mobile : 0914 72 1900 > >> > Yahoo: nguyenhd_lucky > >> > > >> > -- > >> > 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 > >> > >> -- > >> 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 > > > > > > > > > > -- > > Nguyen Hai Duy > > Mobile : 0914 72 1900 > > Yahoo: nguyenhd_lucky > > > > -- > > 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 > > -- > 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 > -- Nguyen Hai Duy Mobile : 0914 72 1900 Yahoo: nguyenhd_lucky -- 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. 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