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https://issues.apache.org/jira/browse/TC-32?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15768082#comment-15768082
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ASF GitHub Bot commented on TC-32:
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Github user mitchell852 commented on a diff in the pull request:
https://github.com/apache/incubator-trafficcontrol/pull/141#discussion_r93513402
--- Diff: traffic_ops/app/lib/UI/ConfigFiles.pm ---
@@ -312,6 +312,9 @@ sub param_data {
if ( $row->parameter->name eq "location" ) {
--- End diff --
...before i lose this thought. does a config file typically have a variance
of locations or scopes? for example, can the value of location and scope vary
by profile?
profile 1: file = cache.config, location =
/opt/trafficserver/etc/trafficserver/, scope = server
profile 2: file = cache.config, location = /opt/somewhereelse/, scope =
profile
if not, even more reason imo that a configfiles table may make sense.
something to think about.
> Improve efficiency of ATS config generation
> -------------------------------------------
>
> Key: TC-32
> URL: https://issues.apache.org/jira/browse/TC-32
> Project: Traffic Control
> Issue Type: Improvement
> Components: Traffic Ops API
> Reporter: Derek Gelinas
> Assignee: Derek Gelinas
> Fix For: 1.9.0
>
>
> Currently when generating ATS configuration files, each server calls for its
> individual files from traffic ops. This is a very database-intensive process
> that is not scalable enough. I propose the following changes:
> 1) Generate the configuration files only as many times as needed - many files
> are the same (or can be) for the entire CDN or server profile.
> 2) Once generated, the files can be cached locally. Requests for the files
> by ORT will result in pulling down these cached files rather than many
> hundreds of DB queries each time.
> 3) Migrate the routes for these files to the API. Each call will have
> multiple options - a request made with no options would return the cached
> file, another option would return the current DB data, and a third option
> would update the cached file with the current information in the DB.
> 4) When an update is queued, generate and cache the configuration files, then
> activate the update flag for the relevant servers once the cached file
> generation is completed.
> In this way, triggering updates for the caches will result in an initial
> increase in activity as traffic ops generates the files needed, followed by
> the much lower impact of the files themselves being requested by the caches.
> I believe we can cut down the number of server-specific configuration files
> to only 5 intially, and potentially fewer by having ORT fill in certain
> fields on files like records.config with local data during processing.
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