Support Forums: Message List - Tangosol Announces the Immediate Availability of Coherence 3.1 http://www.theserverside.com Most recent forum messages en Jive Forums Silver 5.5.30 (www.jivesoftware.com) Fri, 24 May 2013 19:48:21 -0400 Coherence HTTP Session replication requirements http://www.theserverside.com/discussions/thread.tss?thread_id=39186 Thu, 05 Oct 2006 16:32:12 -0400 Thu, 05 Oct 2006 16:32:12 -0400 Thu, 05 Oct 2006 16:32:12 -0400 Oct 5, 2006 Valery Tydykov 0 giant distributed caches http://www.theserverside.com/discussions/thread.tss?thread_id=39186
It's cost-effective, Mike.It's wasting all these cpu cycles on context switches which is not.
You're joking, right?
I am definitely not kidding.

Guglielmo]]> Mon, 03 Apr 2006 23:09:24 -0400 Mon, 03 Apr 2006 23:09:24 -0400 Mon, 03 Apr 2006 23:09:24 -0400 Apr 3, 2006 Guglielmo Lichtner 0 Coherence Partitioned Caching http://www.theserverside.com/discussions/thread.tss?thread_id=39186 .. we also introduced the first version of our Distributed HashMap technology back in 2002 - map entries spread across many processes, dynamic rebalancing of buckets, bucket splitting, at most single network hop guarantee, yada,...]]> Wed, 15 Mar 2006 13:41:00 -0500 Wed, 15 Mar 2006 13:41:00 -0500 Wed, 15 Mar 2006 13:41:00 -0500 Mar 15, 2006 Cameron Purdy 0 Who "invented" partitioned caching. http://www.theserverside.com/discussions/thread.tss?thread_id=39186 Yes, that's one of the reasons why we invented it
Cameron, let me first say that I didn’t mean to upset you or challenge all of the hard work you’ve done to create a great product. We all compete in the...]]> Tue, 14 Mar 2006 09:48:18 -0500 Tue, 14 Mar 2006 09:48:18 -0500 Tue, 14 Mar 2006 09:48:18 -0500 Mar 14, 2006 Gideon Low 0 Loss of a node in Partitioned Caching http://www.theserverside.com/discussions/thread.tss?thread_id=39186 Yes, that's one of the reasons why we invented it.
Given the overlap with what we do and likely others in the space, it will be good to understand what the exact nature of the invention is (is there a patent issued or filed?),...]]> Tue, 14 Mar 2006 03:01:52 -0500 Tue, 14 Mar 2006 03:01:52 -0500 Tue, 14 Mar 2006 03:01:52 -0500 Mar 14, 2006 Jags Ramnarayan 1 Loss of a node in Partitioned Caching http://www.theserverside.com/discussions/thread.tss?thread_id=39186 [..] we have even run into use-cases lately that benefit from applying partitioned caching to a large number of 64-bit processes in order to create multi-terabyte logical caches.
Yes, that's one of the reasons why we invented...]]> Mon, 13 Mar 2006 21:35:35 -0500 Mon, 13 Mar 2006 21:35:35 -0500 Mon, 13 Mar 2006 21:35:35 -0500 Mar 13, 2006 Cameron Purdy 3 Loss of a node in Partitioned Caching http://www.theserverside.com/discussions/thread.tss?thread_id=39186
Let's be honest here . . . Although partitioned caching can assure continued availability when any given node crashes, there is still a significant impact when a node is lost--it is not as simple as the stated "less than one...]]> Mon, 13 Mar 2006 13:15:12 -0500 Mon, 13 Mar 2006 13:15:12 -0500 Mon, 13 Mar 2006 13:15:12 -0500 Mar 13, 2006 Gideon Low 4 Loss of a node in Partitioned Caching http://www.theserverside.com/discussions/thread.tss?thread_id=39186 Let's be honest here . . . Although partitioned caching can assure continued availability when any given node crashes, there is still a significant impact when a node is lost--it is not as simple as the stated "less than one second for...]]> Sun, 12 Mar 2006 14:10:41 -0500 Sun, 12 Mar 2006 14:10:41 -0500 Sun, 12 Mar 2006 14:10:41 -0500 Mar 12, 2006 Cameron Purdy 5 Loss of a node in Partitioned Caching http://www.theserverside.com/discussions/thread.tss?thread_id=39186
Let's be honest here . . . Although partitioned caching can assure continued availability when any given node crashes, there is still a significant impact when a node is lost--it is not as simple as the stated "less than one...]]> Thu, 09 Mar 2006 15:36:51 -0500 Thu, 09 Mar 2006 15:36:51 -0500 Thu, 09 Mar 2006 15:36:51 -0500 Mar 9, 2006 Gideon Low 0 A little more competition than that! http://www.theserverside.com/discussions/thread.tss?thread_id=39186 Thu, 09 Mar 2006 15:27:30 -0500 Thu, 09 Mar 2006 15:27:30 -0500 Thu, 09 Mar 2006 15:27:30 -0500 Mar 9, 2006 Gideon Low 0 Loss of a node in Partitioned Caching http://www.theserverside.com/discussions/thread.tss?thread_id=39186 Let's be honest here . . . Although partitioned caching can assure continued availability when any given node crashes, there is still a significant impact when a node is lost--it is not as simple as the stated "less than one second for...]]> Thu, 09 Mar 2006 14:08:18 -0500 Thu, 09 Mar 2006 14:08:18 -0500 Thu, 09 Mar 2006 14:08:18 -0500 Mar 9, 2006 Mike Spille 1 giant distributed caches http://www.theserverside.com/discussions/thread.tss?thread_id=39186 It's cost-effective, Mike.

It's wasting all these cpu cycles on context switches which is not.

You're joking, right?

I've seen Coherence used to cluster dozens of machines - let's call it 30 just for yucks....]]> Thu, 09 Mar 2006 13:56:43 -0500 Thu, 09 Mar 2006 13:56:43 -0500 Thu, 09 Mar 2006 13:56:43 -0500 Mar 9, 2006 Mike Spille 1 Loss of a node in Partitioned Caching http://www.theserverside.com/discussions/thread.tss?thread_id=39186
A potential issue with huge heaps (say, hundreds of GB or even > 1 TB) is the time it would take to fill up the cache!
To pre-load, you can do parallel loading. Or you can do lazy loading on demand. Or mix the...]]> Thu, 09 Mar 2006 13:32:18 -0500 Thu, 09 Mar 2006 13:32:18 -0500 Thu, 09 Mar 2006 13:32:18 -0500 Mar 9, 2006 Gideon Low 8 giant distributed caches http://www.theserverside.com/discussions/thread.tss?thread_id=39186 It's cost-effective, Mike.It's wasting all these cpu cycles on context switches which is not.

Guglielmo, what kind of distributed system requires such low latency that multi-threading is prohibitive?

Perhaps what you...]]> Tue, 07 Mar 2006 13:31:20 -0500 Tue, 07 Mar 2006 13:31:20 -0500 Tue, 07 Mar 2006 13:31:20 -0500 Mar 7, 2006 Cameron Purdy 0 giant distributed caches http://www.theserverside.com/discussions/thread.tss?thread_id=39186 I'd say that that's highly unlikely. There's a huge investment in Ethernet and IP that goes way beyond the cost of a NIC. The reality is that Infiniband is not a cost effective option for mainstream cases. Which negates the rest of your...]]> Mon, 06 Mar 2006 13:22:34 -0500 Mon, 06 Mar 2006 13:22:34 -0500 Mon, 06 Mar 2006 13:22:34 -0500 Mar 6, 2006 Guglielmo Lichtner 3