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- performance improvement
- https://issues.apache.org/jira/browse/TS-931 we need to cut latency from 24ms to <10ms - FIXED
- https://issues.apache.org/jira/browse/TS-822 make cluster thread number configable - FIXED
- better management UI support:
- TS-644 http_ui cache lookup interface will crash traffic_server in full cluster mode FIXED
- when we want to work on the new cli/webui, what we want cover in cluster field?
- wccp and cluster:
- How to deal with WCCP switch when we are in full Cluster mode? will wccp benefit from Cluster machine table that already on every machine.
- the WCCP codes in the tree is not cluster nice, and is unabled to be used in Cluster env.
- well, who cares how to run TS with WCCP in reverse proxy?
- management beyond cluster:
- How to deal with many clusters? for example do multi cluster config push.
- cluster wide stats:
- is it working? does it require more improvement?
- when there is some very hot urls, that will destroy the whole cluster: consider when you have 10 boxes, each have 1gps interface, and you have at most 10Gbps traffic, but if one of your hot content bing you more than 1gps traffic, then that box with the content will get all the traffic, and the traffic will make cluster communication unable to handle, and the cluster will take off this box, then another box will need to handle this content, so all traffic will crash it too. that will make things a mess. HOW can we handle this?
- the mem hit codes in cache part does no help
- ts cluster hash is unable to make the url local cachable.
- we should setup some cache before it goes to Cluster remote.
Arch improve:
- how to deal with servers with multiple interface/ip adrr? when we have 4+ interfaces, someone may need to setup more link than 1+1.
- not sure how cluster deal with connections in cluster members, can 1 tcp connection handle 1 gigabyte traffic?
- should we make dedicate networking layer for Cluster? to avoiding the bond with ET_NET.
- should we consider change the inter cluster protocol? ie using UDP instead of the current TCP, or any other high performance protocols.
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