Opened 5 years ago

Closed 5 years ago

Last modified 5 years ago

#7969 closed enhancement (fixed)

Log whether flash proxies have opted in

Reported by: dcf Owned by: aallai
Priority: High Milestone:
Component: Archived/Flashproxy Version:
Severity: Keywords:
Cc: bastik.public@…, alexandre.allaire@… Actual Points:
Parent ID: Points:
Reviewer: Sponsor:


Make the facilitator log, for each request, whether the proxy has set the flashproxy-allow cookie. This will allow us to estimate how much proxy capacity we will lose by going to opt-in-only.

Child Tickets

Attachments (3)

flashproxy-allow.png (7.8 KB) - added by dcf 5 years ago.
flashproxy-allow-frac.png (5.9 KB) - added by dcf 5 years ago.
flashproxy-allow.20130220.gz (1.6 MB) - added by dcf 5 years ago.
Log file of cookie settings.

Download all attachments as: .zip

Change History (11)

comment:1 Changed 5 years ago by bastik

Cc: bastik.public@… added

comment:2 Changed 5 years ago by dcf

It occurs to me that we could also just require opt-in for a few days and see what happens. Proxies reload themselves every 24 hours because of a meta refresh in the embed. Make the switch, give them 24 hours to settle, then a day or two of measuring capacity, then switch back.

comment:3 Changed 5 years ago by dcf

Owner: changed from dcf to aallai
Status: newassigned

comment:4 Changed 5 years ago by aallai

Cc: alexandre.allaire@… added
Status: assignedneeds_review

I have an implementation at branch opt-in.The proxy sends the repr() of the cookie setting to facilitator.cgi, which then writes a timestamp and newline to the appropriate text file. 

According to, we don't need to worry about file locking for appends, as long as we don't run into file size limits (i.e. disk gets full). 

comment:5 Changed 5 years ago by dcf

Status: needs_reviewneeds_information

I rebased and reworked your opt-in branch to this:

This is running now on the public facilitator (as of 2013-02-05 19:13:28 EST) and we are logging cookie values. I'll wait a few days and update the ticket.

comment:6 Changed 5 years ago by dcf

Resolution: fixed
Status: needs_informationclosed

I showed graphs of the last two weeks of logs in my talk today. Thanks aallai for helping with the graphs. Also attaching the grpahs to the ticket.

It looks like about 2 or 3 percent of our current proxies have opted in. Marking this done because we got the logging done, now have to decide what to do with the results.

Changed 5 years ago by dcf

Attachment: flashproxy-allow.png added

Changed 5 years ago by dcf

Attachment: flashproxy-allow-frac.png added

comment:7 Changed 5 years ago by dcf

Actually I decided I don't want to keep the cookie logging forever. Let's turn it on again in the future if we need it. I pushed proxy code that doesn't send the cookie value at Thu Feb 21 13:04:51 PST 2013.

comment:8 Changed 5 years ago by dcf

Attaching the log file that was the data source for the attached graphs. Also present in

Changed 5 years ago by dcf

Log file of cookie settings.

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