THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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I'm using Traffic Server on a speedy datacenter-grade connection. As such, I've configured it to be somewhat pretty impatient in terms of timeouts.
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CONFIG proxy.config.http.keep_alive_no_activity_timeout_in INT 600 CONFIG proxy.config.http.keep_alive_no_activity_timeout_out INT 600 CONFIG proxy.config.http.transaction_no_activity_timeout_in INT 2010 CONFIG proxy.config.http.transaction_no_activity_timeout_out INT 2010 CONFIG proxy.config.http.transaction_active_timeout_in INT 43200 CONFIG proxy.config.http.transaction_active_timeout_out INT 43200 CONFIG proxy.config.http.accept_no_activity_timeout INT 2010 CONFIG proxy.config.net.default_inactivity_timeout INT 2010 |
Origin Server Connect Attempts
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CONFIG proxy.config.http.cache.cache_urls_that_look_dynamic INT 0
CONFIG proxy.config.http.chunking.size INT 128K
CONFIG proxy.config.http.server_session_sharing.match STRING host
CONFIG proxy.config.http.cache.ignore_server_no_cache INT 1 |
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NOTE: One should always double the setting for that configuration, as it allows "headroom" within Traffic Server such that one will never run out of slots in which to store objects.
Third, I 've explicitly tuned the average disk fragment setting as well as disabled a feature that for me slows down the cache a bit.
NOTE: These settings require one to refresh the disk cache to take effect. Simply remove /usr/local/var/trafficserver/cache.db and restart Traffic Server to refresh the disk cache.
Fourth, I discovered that backing off the cache directory's sync frequency helps populate the RAM cache under low load. I definitely recommend trying this.
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CONFIG proxy.config.cache.ram_cache.size INT 128M32M CONFIG proxy.config.cache.ram_cache_cutoff INT 16M4M CONFIG proxy.config.cache.ram_cache.algorithm INT 1 CONFIG proxy.config.cache.min_average_object_size INT 64K CONFIG proxy.config.cache.target_fragment_size INT 262144 CONFIG proxy.config.cache.mutex_retry_delay INT 50 CONFIG proxy.config.cache.enable_read_while_writer INT 0 CONFIG proxy.config.cache.dir.sync_frequency INT 1200900 |
Logging Configuration
The defaults for Traffic Server specify a squid-compatible logfile that's binary in nature. I prefer to have the file readable so I'm overriding this.
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Third, I also allow the cache to use stale DNS records for up to 5 15 minutes while they're being updated. This also contributes to cache speed.
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############################################################################## # HostDB ############################################################################## CONFIG proxy.config.hostdb.ip_resolve STRING ipv6;ipv4 CONFIG proxy.config.hostdb.size INT 32K64K CONFIG proxy.config.hostdb.storage_size INT 8M16M CONFIG proxy.config.hostdb.serve_stale_for INT 900 CONFIG proxy.config.cache.hostdb.sync_frequency INT 900 CONFIG proxy.config.hostdb.timeout INT 30010080 |
Restart Traffic Server
Once you've updated the relevant records.config settings, simply refresh your disk cache if necessary and then restart Traffic Server.
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