[squid-users] Unable to cache object within Squid from Reid Watson on 2013-06-24 (squid-users)

From: Reid Watson <reid.watson_at_auckland.ac.nz>
Date: Tue, 25 Jun 2013 05:51:30 +0000

Hi,

We seem to be having a strange issue with SQUID caching an object once it has been purged - this issue does not occur with all objects within the cache..

Quick Overview

- Four Apache Server with Squid Installed
- RedHat 5.7 i386
- squid-3.1.8-1.el5

Issue

- Admin sends a Purge request simultaneously to all four server

Example
1372113766.459 0 10.10.10.10 TCP_MISS/200 280 PURGE http://www.auckland.ac.nz/uoa/ - NONE/- -

- Squid seems to fail on caching the object
- All requests are sent to backend servers

Server 1
1372113766.459 0 10.10.10.10 TCP_MISS/200 280 PURGE http://www.auckland.ac.nz/uoa/ - NONE/- -
372113766.779 23 10.10.10.3 TCP_MISS/504 5063 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113767.560 27 10.10.10.3 TCP_MISS/504 4874 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113769.170 0 10.10.10.2 TCP_MISS/504 5041 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113771.221 0 10.10.10.2 TCP_MISS/504 5045 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113772.337 0 10.10.10.2 TCP_MISS/504 4930 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113773.454 0 10.10.10.2 TCP_MISS/504 4671 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113774.142 44 10.10.10.3 TCP_MISS/504 4735 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113774.490 0 10.10.10.3 TCP_MISS/504 4922 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113776.406 0 10.10.10.3 TCP_MISS/504 4731 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113777.237 0 10.10.10.2 TCP_MISS/504 4247 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113777.399 9910 127.0.0.1 TCP_MISS/200 9891 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113779.143 0 10.10.10.2 TCP_MISS/504 4832 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113957.693 56434 127.0.0.1 TCP_MISS/200 9891 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113957.747 0 10.10.10.3 TCP_MISS/504 4908 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113957.989 0 10.10.10.4 TCP_MISS/504 4797 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113958.130 0 10.10.10.4 TCP_MISS/504 4797 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372114043.139 106378 127.0.0.1 TCP_MISS/200 9891 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372114043.303 10112 127.0.0.1 TCP_MISS/500 24731 GET http://www.auckland.ac.nz/uoa/ - ANY_PARENT/vip-dr text/html
1372114105.918 0 10.10.10.3 TCP_MISS/504 4591 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372114106.414 57182 127.0.0.1 TCP_MISS/200 69995 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372114106.419 55771 127.0.0.1 TCP_MISS/200 45853 GET http://www.auckland.ac.nz/uoa/ - ANY_PARENT/vip-dr text/html
1372114106.436 17387 127.0.0.1 TCP_MISS/200 69967 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372114106.490 60516 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372114106.707 58628 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - ANY_PARENT/vip-dr text/html
1372114106.791 0 10.10.10.4 TCP_MISS/504 4968 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372114106.799 0 10.10.10.4 TCP_MISS/504 4771 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372114106.801 0 10.10.10.4 TCP_MISS/504 4933 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372114106.802 16330 127.0.0.1 TCP_MISS/200 70087 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372114107.106 0 10.10.10.4 TCP_MISS/504 5129 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372114107.542 0 10.10.10.2 TCP_MISS/504 5519 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372114107.783 0 10.10.10.4 TCP_MISS/504 5027 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html

Server 2
1372113766.459 0 10.10.10.10 TCP_MISS/200 280 PURGE http://www.auckland.ac.nz/uoa/ - NONE/- -
1372113781.702 12535 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113792.534 10577 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113799.256 20115 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113800.106 9007 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113804.392 0 10.10.10.5 TCP_MISS/504 4480 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113804.700 10072 127.0.0.1 TCP_MISS/500 5972 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113805.942 33607 127.0.0.1 TCP_MISS/200 45853 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113807.234 0 10.10.10.5 TCP_MISS/504 4959 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113809.608 0 10.10.10.5 TCP_MISS/504 5096 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113813.240 0 10.10.10.3 TCP_MISS/504 4978 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113813.696 0 10.10.10.5 TCP_MISS/504 5247 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113813.891 0 10.10.10.3 TCP_MISS/504 5084 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113814.193 0 10.10.10.3 TCP_MISS/504 4705 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113814.523 0 10.10.10.5 TCP_MISS/504 4333 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113815.007 0 10.10.10.4 TCP_MISS/504 4786 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113815.787 14 127.0.0.1 TCP_MISS/302 441 GET http://www.studentservices.auckland.ac.nz/ - FIRST_UP_PARENT/vip-dr text/html
1372113817.586 0 10.10.10.5 TCP_MISS/504 4929 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html

Server 3
1372113766.462 0 10.10.10.10 TCP_MISS/200 280 PURGE http://www.auckland.ac.nz/uoa/ - NONE/- -
1372113784.124 12492 127.0.0.1 TCP_MISS/200 25937 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113785.271 16875 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113785.502 0 10.10.10.3 TCP_MISS/504 5013 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113786.265 13515 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113787.636 11329 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113808.189 25570 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113810.645 11315 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113825.177 18327 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113838.065 23059 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113862.948 18662 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113865.528 15994 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113870.646 7908 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113875.982 68389 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113884.250 59968 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113889.337 46658 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113894.817 49027 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113903.706 55316 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113908.168 59530 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113908.600 51882 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113909.823 51560 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113910.590 13193 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113950.581 82863 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113961.012 67548 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113971.121 56412 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113988.110 59929 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113988.252 61422 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113989.161 57890 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113999.028 80609 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372114009.286 44824 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - ANY_PARENT/vip-dr text/html

Server 4
1372113766.464 0 10.10.10.10 TCP_MISS/200 280 PURGE http://www.auckland.ac.nz/uoa/ - NONE/- -
1372113768.401 0 10.10.10.4 TCP_MISS/504 4894 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113768.649 0 10.10.10.4 TCP_MISS/504 4714 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113771.632 0 10.10.10.4 TCP_MISS/504 4196 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113776.307 0 10.10.10.4 TCP_MISS/504 5396 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113777.194 10442 127.0.0.1 TCP_MISS/200 70065 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113785.883 0 10.10.10.5 TCP_MISS/504 4749 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113787.491 11087 127.0.0.1 TCP_MISS/200 70115 GET http://www.auckland.ac.nz/uoa/ - FIRST_UP_PARENT/vip-dr text/html
1372113788.351 0 10.10.10.4 TCP_MISS/504 5398 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113788.992 0 10.10.10.5 TCP_MISS/504 5015 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html
1372113791.540 0 10.10.10.4 TCP_MISS/504 4834 GET http://www.auckland.ac.nz/uoa/ - NONE/- text/html

- if you send a reload command (/sbin/service squid reload) the object is stored within the cache instanlty

Cheers

Reid
Received on Tue Jun 25 2013 - 05:51:47 MDT

This archive was generated by hypermail 2.2.0 : Fri Jun 28 2013 - 12:00:07 MDT