dont-use-fsync real world impact

Jure Sah e at juresah.si
Sat Sep 28 19:28:37 UTC 2019


On 28. 09. 19 15:48, sthaug at nethelp.no wrote:
>> What changes would be required for this to work? A memory pool of
>> offered IP addresses which are not to be assigned to new clients?
>> Rotating a pool of physical disks to store leases in? Multiple
>> synchronised DHCP servers?
>>
>> I am just trying to find a solution to this problem that is infinitely
>> scalable.
> But in practice you don't need infinite scalability, because you don't
> have an infinite number of customers.
>
> It's reasonably simple to scale up by using fast storage (battery backed
> RAID with a suitable amount of memory is common), more servers and more
> locations. Of course it has a cost - but so does your (or my) time.
> Where do you want to spend your money?
Well I quite disagree, even with SSD RAID arrays, the ultimate
performance is finite, whereas demands on a DHCP service for instance by
mobile clients is quite significant and it's easy to have too many
customers for a single server.

LP,
Jure


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