Maintained by: NLnet Labs

ldns -> unbound migration

Paul Wouters
Fri Jun 3 18:51:28 CEST 2016

On Fri, 3 Jun 2016, Vladimir Levijev via Unbound-users wrote:

> Given the requirement to perform up to 20-40 DNS queries to different
> name servers asynchronously in a single task, how well can unbound
> handle such load (with all the possible timing outs and so on)? What
> would be the recommended limit of queries in this case?

Seeing that the unbound DNS server uses libunbound, you can be sure this
library can handle many orders of magnitude more than 40 qps. More like
400.000 qps :)

> And the second question, perhaps anybody has an idea, how easy is
> switching from libldns to libunbound? What are the
> advantages/disadvantages of doing that?

There is some great documentation at

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