Did you mean scalability?

jabber (jabber)
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There is no absolute scalability. You should know how many clients you server will serve potentially. If it just serves 10-300 clients, you may use any server you like. If you will build a huge site, you should take into account load balancing and fault tolerance. Then, you you need build a distributed system. In the enterprise Java, one usually build distributed system using Enterprise Javabeans and scalability is realized by server clustering technology.

The first step in a regular project is to know what your business is about. If one is unclear about the scale of his/her project, it is
pointless to consider its architecture, Even one creates an architure, it is usually pathological.

By the way, I have a suggestion for you. Don't assume the people you are communicating is an expert, even she/he is your chief architect. Frankly speaking, I did not understand your postings well because your writing was so casual. I understand it is partially because your langauge skill is not so good. But more likely, it is because you thought that people should be able to understand your question.

Please take my criticisms as a friendly piece of advice. I intend to help you, not to hurt you.
Your writing is too simple, too brief. You did not set up the context for your question. IF you cope with Non-Chinese speakers this way, they will think you have communication problems and you may lose your job. I am not scaring you. I have witnessed such stories several times since I began my programmer carrer. I encourage you to learn from fly_eagle. Two weeks ago, he met a problem. His English is not so good. However, he did his best to describe his problem in his posting so he succeeded in getting help here.

My words may hurt your feelings. If so, I apologize in advance. I am a volunteer here.
I want to help people here. Hope my criticism can help. Again, if you feel bad about my words, I apologize to you.

If you could describe your problem clesrly, many people may help you. Marco, fromZtoA, oldsix, sailor, ... just name a few.
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Back To Topic: I have several clients, there is a little bit difference among them, maybe I'll have more clients in future, how to design the architecture?

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