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content/2015-11.md: Add more notes 

Signed-off-by: Alan Orth <alan.orth@gmail.com>
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Alan Orth 2015-11-25 22:54:25 +02:00
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@ -66,3 +66,20 @@ location ~ /(themes|aspects/ReportingSuite|aspects/Statistics) {
$ psql -c 'SELECT * from pg_stat_activity;' | grep idle | grep -c cgspace
93
```
- I looked closer at the idle connections and saw that many have been idle for hours (current time on server is `2015-11-25T20:20:42+0000`):
```
$ psql -c 'SELECT * from pg_stat_activity;' | less -S
datid | datname | pid | usesysid | usename | application_name | client_addr | client_hostname | client_port | backend_start | xact_start |
-------+----------+-------+----------+----------+------------------+-------------+-----------------+-------------+-------------------------------+-------------------------------+---
20951 | cgspace | 10966 | 18205 | cgspace | | 127.0.0.1 | | 37731 | 2015-11-25 13:13:02.837624+00 | | 20
20951 | cgspace | 10967 | 18205 | cgspace | | 127.0.0.1 | | 37737 | 2015-11-25 13:13:03.069421+00 | | 20
...
```
- There is a relevant Jira issue about this: https://jira.duraspace.org/browse/DS-1458
- It seems there is some sense changing DSpace's default `db.maxidle` from unlimited (-1) to something like 8 (Tomcat default) or 10 (Confluence default)
- Change `db.maxidle` from -1 to 10, reduce `db.maxconnections` from 90 to 50, and restart postgres and tomcat7
- Also redeploy DSpace Test with a clean sync of CGSpace and mirror these database settings there as well
- Also deploy the nginx fixes for the `try_files` location block as well as the expires block