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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have an application that will send and receive messages to Users associated with Groups. Each Group is independent will have 5 to 10 users associated.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The Users, Client applications, will send commands to the server application that will execute it and return a response (typical async RPC). The server application will push to Users and to the Groups relevant informations.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am thinking about what could be the best architecture:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>1)<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>For each User one Command Queue where the Client applications will send the commands and one Response Queue where the User will receive the response sent by the server;<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>2)<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>For each User one Information Queue where the Server will push informations specific to the user;<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>3)<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>For each Group one Information Queue where the Server will push informations specific to the Group. In this case all users of this group will receive the informations published in this queue;<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>My concern is that if I have 30 groups and 6 users per group I will have 180 users and considering the architecture above I will have 540 queues (30*3) for Users and 30 queues for the Groups. Does it sound OK or too much for RabbitMQ.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I could have, instead of this, another architecture that could use topics exchanges. Each user could publish and receive commands and informations using a topic: group.user. This way I could have this:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>1)<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>For each Group one Command Queue where the Client applications will send the commands and one Response Queue where the User will receive the response sent by the server;<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>2)<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>For each Group one Information Queue where the Server will push informations specific to the Group. In this case all users of this group will receive the informations published in this queue;<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>This will lead me to 90 Queues (30*3) for Users and 30 Queues for Groups.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Which one is the better ??? <o:p></o:p></p><p class=MsoNormal>Thanks in advance<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>