Cloud applications are commonly split in three distinct tiers, the presentation tier, the application tier and the storage tier. The presentation tier displays information related to the application services, such as web pages. The application tier contains the business logic. The storage tier executes the data persistence mechanisms (database servers, file shares, etc.) and the data access layer that encapsulates the persistence mechanisms and exposes the data.
Pierre Sutra otrack
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| import org.infinispan.Cache; | |
| import org.infinispan.configuration.cache.CacheMode; | |
| import org.infinispan.configuration.cache.ConfigurationBuilder; | |
| import org.infinispan.manager.EmbeddedCacheManager; | |
| import org.infinispan.notifications.Listener; | |
| import org.infinispan.notifications.cachelistener.annotation.CacheEntryCreated; | |
| import org.infinispan.notifications.cachelistener.annotation.CacheEntryModified; | |
| import org.infinispan.notifications.cachelistener.annotation.CacheEntryRemoved; | |
| import org.infinispan.notifications.cachelistener.event.CacheEntryEvent; | |
| import org.infinispan.test.AbstractCacheTest; |
The consensus problem is a fundamental building block of distributed computing. Solutions to this problem can be found in the large-scale systems that run the Cloud, as well as in the programming librairies of multicore architectures.
Consensus requires the processes to reach an agreement on a common value.
otrack
/ antidote.md
Last active
September 27, 2018 12:40
(the presentation slides are available here)
Geo-distribution is the new norm: today's Internet services span multiple sites scattered around the globe. Distributing data globally enables services to tolerate disasters and minimizes latency by allowing accesses to the closest site.
In a geo-distributed service, data is commonly replicated at the different service locations.
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| diff --git a/bin/image.sh b/bin/image.sh | |
| index 40ee452..7a8d7fb 100755 | |
| --- a/bin/image.sh | |
| +++ b/bin/image.sh | |
| @@ -7,7 +7,7 @@ else | |
| fi | |
| DIR=$(dirname "$0") | |
| -IMAGE=0track/vcd-java-client:${TAG} | |
| +IMAGE=vitorenesduarte/vcd-java-client:${TAG} |
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| diff --git a/bin/image.sh b/bin/image.sh | |
| index 7a8d7fb..40ee452 100755 | |
| --- a/bin/image.sh | |
| +++ b/bin/image.sh | |
| @@ -7,7 +7,7 @@ else | |
| fi | |
| DIR=$(dirname "$0") | |
| -IMAGE=vitorenesduarte/vcd-java-client:${TAG} | |
| +IMAGE=0track/vcd-java-client:${TAG} |
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| diff --git a/bin/image.sh b/bin/image.sh | |
| index 7a8d7fb..40ee452 100755 | |
| --- a/bin/image.sh | |
| +++ b/bin/image.sh | |
| @@ -7,7 +7,7 @@ else | |
| fi | |
| DIR=$(dirname "$0") | |
| -IMAGE=vitorenesduarte/vcd-java-client:${TAG} | |
| +IMAGE=0track/vcd-java-client:${TAG} |
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| http://tinyurl.com/datascale311018 |
otrack
/ script.erl
Created
November 14, 2018 13:23
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| application:ensure_started(java_erlang). | |
| {ok,NodeId} = java:start_node([{add_to_java_classpath,["vcd.jar"]}]). | |
| Conf = java:call_static(NodeId,'org.imdea.vcd.Config',parseArgs,[""]). | |
| Socket = java:call_static(NodeId,'org.imdea.vcd.Socket',create,[Conf,10]). | |
| MsgSet = java:call_static(NodeId,'org.imdea.vcd.Generator',messageSet,[Conf]). | |
| _ = java:call(Socket,send,[MsgSet]). | |
| _ = java:call(Socket,'receive',[MsgSet]). |
otrack
/ script.erl
Created
November 14, 2018 15:09
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| application:ensure_started(java_erlang), | |
| {ok,NodeId} = java:start_node([{add_to_java_classpath,["vcd.jar"]}]), | |
| Conf = java:call_static(NodeId,'org.imdea.vcd.Config',parseArgs,[""]), | |
| Socket = java:call_static(NodeId,'org.imdea.vcd.Socket',create,[Conf,10]), | |
| SentSet = java:call_static(NodeId,'org.imdea.vcd.Generator',messageSet,[Conf]), | |
| SentBytes = java:call(java:call(java:call(java:call(SentSet,getMessagesList,[]),get,[0]),getData,[]),toByteArray,[]), | |
| io:format("array is ~p~n",[java:array_to_list(SentBytes)]), | |
| java:call(Socket,send,[SentSet]), | |
| RcvSet = java:call(Socket,'receive',[]), | |
| RcvBytes = java:call(java:call(java:call(java:call(SentSet,getMessagesList,[]),get,[0]),getData,[]),toByteArray,[]), |
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