A quik IPL

1. IPL is fun.
2. Royal Bangalore team needs a Captain.
3. Mumbai Indians? Who are they?
4. Only Rajasthan Royals look like one team.
5. Deccan Chargers need to kick Laxman out.
6. Daredevils is a balanced team.
7. And why is Chennai Super Kings winning? They wear Yellow ;)

Sorry, I could not find India

India as we assume sitting in US is of a nation of mild mannered, Cricket crazy, Helmet wearing IT savvy bunch, busy with the mantra of development. Sorry! I did not find that India. What I found instead was a morning newspaper filled with sickening news. A pregnant woman dying on the streets denied Hospital services, a sitting MLA injured by a crude bomb attack, corruption, Poisonous measles shots killing infants, Irrelevant political raking and Channels filled with only and only "Sansanikhej" negativities. The colors we see on TV are mostly confined to Bollywood dramas. What I met instead were social chauvinists, poor service providers, crippled human values and power hungry goons. I thought of seeing roaring Tigers instead I found opportunistic hyenas. Or may be its just that my India is different from your India.

Direct line to God

Sen. Obama, I do have a direct line to God too but its always "Leave me a voice mail after the weep."

Is it possible in MapListener? Yes, But...

It is interesting to find how Oracle Coherence is evolving and is being used to address some of the most critical problems of early 2000. The speed and areas it is being adopted I am not sure how long "It is not a database, It is not an Application server..." statement will hold true in future. The issues of Transaction integrity, multi-Table operations and off-loaded processing of yesteryears are now being done on Grid with operations spanning across multiple Caches with event driven architecture.
One common problem we deal with is when the Grid is being used by multiple independent applications but actions are to be performed based on events inside the Cache. Something like data needs to be put in Cache(2) based on an entry inserted in another Cache(1) by a different application. Similar to database events Coherence supports Map Listeners that listen to Cache events like Entry Inserted, updated or removed events. Following is a sample code:

NamedCache nCache = CacheFactory.getCache ("Cache1");
nCache.addMapListener (new MyListener ());

...
public class MyListener implements MapListener {
    private NamedCache nCache = CacheFactory.getCache ("Cache2");

    public void entryInserted (MapEvent m_event) {
       Object key = ...;
       Object value = ...;     
       nCache.put (key, value);
    }
    ....
}

Now the fun part - Letting the Grid do it. What if Grid itself takes an action when an Entry is inserted, updated or deleted? Making Coherence Grid from an infrastructural resource to a self-contained processing unit. A "data oracle" that knows what it needs to do with data besides efficiently managing it. Now lets take a little detour here...
Who can listen to events? Someone who has "access" to where the events are happening, right? MapListeners that listen to Cache events can be added programatically to a Cache as shown above and can also be configured to listen to Backing Maps. Backing Maps are the components that manage data on each individual nodes of the cluster (one for each). In general mentioning a MapListener means the ones added to the NamedCache object. Listeners configured to listen to local events of Backing Maps are called Backing Map Listeners even though the same Listener instance can be used in either of the two. Backing Map Listeners can be configured in the coherence-cache-config.xml as shown below:

<read-write-backing-map-scheme>
     <scheme-name>my-rw-bm</scheme-name>
     <!-- unlimited capacity internal cache -->
     <internal-cache-scheme>
         <local-scheme>
         </local-scheme>
     </internal-cache-scheme>
     <cachestore-scheme>
         ...
     </cachestore-scheme>
     <listener>
         <class-scheme>
             <class-name>MyListener</class-name>
         </class-scheme>
     </listener>                                
</read-write-backing-map-scheme>

With the above configuration MyListener instance on that node will listen to the local events generated by the backing map. The problem is now that the above implementation of MyListener will not work due to Thread issues. Multiple cache access can not be performed with in the same Thread which for BackingMap listener is an issue. To make this happen a separate Thread needs to be spawned from with in the MyListener to be able to access another Cache while listening to events from another.
So Yes, it is possible to do "that" what you want to do But, be a little careful.

Shoab has decided to take Indian Citizenship

After being banned for 5years by Pakistani Cricket Board, Speedster Shoab Akhtar has decided to take Indian citizenship and call Bombay (Mumbai) his new home. In an exclusive interview he said he does not care about PCB anyway as he will make ample of amount of money in ICL. Welcome home Shoab!

What you see is not what...

After an epiphany a man thought of building his own house. He studied 100s of houses. Single family homes, Condominiums, Palatial homes and what not. He took notes of anything and everything he could see in a house. How the kitchen should be, how the living area should be, bedrooms, study. After months and months of research he started to build his own. He bought a land, put bricks on top of each other for walls. He carefully put the roof on. The most beautiful entrance he could afford. Just as he finished building it, the house collapsed. Alas! He never had seen a foundation.

Coherence cluster and Plasma technology

One of the most important features of a gaseous plasma as found in tube-lights or Plasma Televisions is that even though its highly ionized they remain electrically neutral. What it means is that if I take a portion of a gas out from the tube, the ions realign themselves in such a way that they maintain an overall neutral charge. On the other hand if I add more gaseous plasma to an existing volume they still maintain electrical neutrality because of an automatic realignment. Imagine if its possible to stick in a finger inside a tube-light while gaseous plasma is formed, we won't feel any electric shock. As 99% of the visible universe is in a form of Plasma, this behavior is extremely important to study. A behavior to maintain a core property irrespective of changes in its atmosphere. Now lets jump a hoop. If we compare these particles in gaseous plasma to nodes in a (Oracle) Coherence cluster we will find some stark similarities. A true cluster as in Coherence too always maintains electrical neutrality. This means that if a few nodes are removed from the cluster, cluster re-balances itself to keep the finite state. A realignment in plasma is similar to repartitioning of data that happens in a coherence cluster. Adding new nodes to the cluster still does not change the behavior as repartitioning of data keeps the cluster in a neutral state. Even though each node in a cluster are electrically charged i.e, storing and managing data in its heap but together they maintain a single system image to any external application as the finger sticking inside the gaseous plasma.