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5

DNS doesn't, properly speaking, propagate. Records have a TTL (time to live), and that's how long other caching DNS servers should retain an existing lookup answer. You'll want to do some more self-education rather than go by thumbnail rules like "12 hours should do it." If the authoritative nameserver is showing the correct results, that's the end of the ...


3

I don't get you're question becouse you say some nonsens. If you are on linux/unix system that not run dns server 'named/bind/other' system not cache any dns query. Applications (DNS clients) just query the DNS server every time without caching, just query the DNS server every time. If you use dns server 'named/bind' and want clear cache just restart this ...


2

Varnish cannot connect to FastCGI backend directly. You nee to use your existing webserver for HTTP - FastCGI translation. So, you need to change your existing webserver to another port, and then use that as the backend in Varnish.


2

It may not be zfs - you have lots of free memory, so consider this possibility - echo 'pg_contig_disable/D' | mdb -k If the output is: echo pg_contig_disable/D | mdb -k pg_contig_disable: pg_contig_disable: 0 You may be experiencing a sort of NUMA issue. Solaris 10 tries to facilitate faster memory access by setting up blocks of memory for ...


2

Yes, redundant power, while reducing the need for a BBU, does not eliminate that need. Consider the case where you wire up A/B power incorrectly, for example. The additional cost for a BBU is usually worth it where your data matters e.g. storage node, DB, etc.


2

Some of this has been covered here before... and here, too. I can't think of any situation where you wouldn't want a battery-backed or flash-backed cache unit on your hardware RAID controller. It's what makes write caching possible. See: BBWC: in theory a good idea but has one ever saved your data? If your system panics suddenly, the question as to what ...


1

Thanks to jim mcnamara for pointing me in the right direction. I wasn't seeing symptoms consistent with the pg_contig_disable issue, but it did lead me to an issue with zfetch. I found the same issue we were having on the following site: http://solaristalk.blogspot.com/2014_05_01_archive.html This led to a tuning article on the Oracle site describing why ...


1

You are declaring the same variable several times with the map directive so when nginx evaluates this in the context of fastcgi_no_cache or fastcgi_cache_bypass directives, it will only use one map block. Declare different variables and use them in these directives.


1

A "real" hardware RAID controller (not a "fake" RAID that relies on the host CPU) is a freestanding computer separate from the host computer in which it's installed. A hardware RAID controller will handle reading/writing from the disks as the operating system makes requests, but it does not specifically rely on anything running inside the host computer ...


1

Since the answer is somehow hidden in the question - here is the solution for nginx in a VirtualBox environment as standalone answer. In your nginx config (usally /etc/nginx/nginx.conf) or vhost config file change the sendfile parameter to off: sendfile off;


1

I don't think is possible, play store now sends delta updates so even if you decide to cache that requests you would only be caching chunks of apk. Please note that the request you posted has parameters as there is query character (?) at the end and squid won't cache those requests by default.



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