Load-balancer options

Posted by toolkit on Server Fault See other posts from Server Fault or by toolkit
Published on 2009-05-22T14:36:26Z Indexed on 2010/03/23 12:53 UTC
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Filed under:

load-balancer

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dns

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apache

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tomcat

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terracotta

I am looking at a number of possible options for load-balancing.

So far, I am constrained to the following options:

DNS server load-balancer, balancing to a cluster of tomcat servers, with terracotta for session replication. Pros - don't have to buy new kit. Cons - DNS lb can keep directing to a broken server.
Hardware load-balancer, direct to cluster of tomcat servers. Pros - could have second box for failover lb. Cons - expense.
Apache server load-balancer. Pros - apache's lb polls for broken servers. Cons - apache server is single point of failure, plus need to buy another server.

Are there any other options I should consider?

Thanks.

Update: Thanks for all the answers so far +1's all round. Not accepting an answer yet, to keep more ideas coming.

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