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servlets performances

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my servlet's main functionality is "parsing incoming data from applets and then inserting into database (not data but only update statements)." , i have already separated servlets to multipule so that single servlet do not take all the load , but can you please tell me that,
- should this servlet implement "SingleThreadModel" or not ?
- the methods which parse data and insert into database , should those methods be "synchronized" methods or not ?
- right now whenever servlet initialized , i open the database connection and the use that statment through out all the methods , is it good implementation for interaction with the database or not. ?
- there are multipule servlets for different data but they all perform same tasks , so when there are number of servlet , is tomcat is good enough to handle these many instances of servlets ,
- what is the limitation of tomcat , what is good option for tomcat for above requirments. ?
Author and all-around good cowpoke
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1. Do not use SingleThreadModel
2. Since creating a database connection is very time consuming, use a database connection pool.
3. Your limitation is going to be the db connection speed, not the Tomcat speed.
Consider Paul's rocket mass heater.
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