[TS-1893] Make ATS use keep-alive connections per origin address

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.0.0
• Component/s: HTTP, Network, Performance
• Assignee: Alan M. Carroll
• Reporter: Tomasz Kuzemko
• Created: 13/May/13 22:32
• Updated: 18/Dec/14 05:11
• Resolved: 14/Feb/14 22:51

Description

In current implementation Traffic Server uses a two level hash for keep-alive connections: server ip -> hostname -> keep-alive session.

The reasoning behind this was that some old http servers could not handle the request properly for different virtual hosts on the same keep-alive session. Recent web servers should all handle this situation correctly.

The improvement would be to make a single level hash to keep just the server ip. Shared hosting configurations using ATS as a reverse-proxy could benefit the most from this improvement.

Issue Links

• is duplicated by: TS-802 Unique KA pools for SOCKS/src IP parameters
• is related to: TS-802 Unique KA pools for SOCKS/src IP parameters
• relates to: TS-2863 FQDN session pools work poorly