Hello
On 02/09/2012 11:22 AM, César Álvarez Núñez wrote:
Almost all my zk agents use asynchronous api; mainly because all services
are intrinsically asynchronous.
Can you give me more details about these services? Can I found details
about them on the web?
In fact I've wrapped the Zookeeper client to hide synchronous methods; so
anyone who want to develop new agents should think asynchronously.
It could be hard at first but one you are used to it, the resulting code is
cleaner than with sync api, and more easy to understand and maintain by
other developers.
I also imagine that in some scenarios event-based applications (i.e.
that rely on the async api) provide better performance than applications
that use the sync api.
Thanks
Pierre Louis
On Thu, Feb 9, 2012 at 10:32 AM, Pierre Louis Aublin<
[email protected]> wrote:
Thank you for your replies.
On 02/09/2012 12:46 AM, Benjamin Reed wrote:
the yahoo services mention use asynchronous operations a lot. during
startup and reconfig they would have to modify a bunch of znodes. by
shooting off the modifications asynchronously, they were able to
drastically reduce the startup and reconfig time.
ben
On 02/09/2012 12:48 AM, Jordan Zimmerman wrote:
Some of the Curator recipes use async. For instance, adding a entry into
the DistributedQueue is done in the background as there's no reason for
the foreground process to wait for this.
-JZ
On 2/8/12 2:09 PM, "Pierre Louis
Aublin"<pierre-louis.aublin@**inria.fr<[email protected]>
wrote:
On Wed, Feb 8, 2012 at 2:09 PM, Pierre Louis Aublin
<[email protected]> wrote:
Hello everybody
I would like to know if the asynchronous operations of the client API are
often used in applications that use Zookeeper.
In [1] I found 3 applications built on Zookeeper (the Yahoo! Fetching
Service, Katta and the Yahoo! Message Broker). However, I do not find if
they use the synchronous or asynchronous operations.
The big question I am trying to answer is : is it relevant to consider a
closed-loop model in order to benchmark replicated services (Zookeeper
being
a good candidate to build replicated services)? Can you give me any clue
on
that?
Thanks in advance
Pierre Louis Aublin
[1] ZooKeeper: Wait-free Coordination for Internet-scale Systems, Patrick
Hunt and Mahadev Konar, /Yahoo! Grid;/ Flavio P. Junqueira and Benjamin
Reed, /Yahoo! Research/
