Drools Configurations

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PostgreSQL bytea and oid

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I came across with following issue when i'm trying to save the uploaded file in to the database as a byte array using hibernate, JPA 2.0  annotation with Postgre SQL. even though in this stage i'm pretty much new to Postgre SQL, It has two type of data types to represent the binary data or BLOB, since i'm using hibernate jpa annotations use the annotation @Lob to indicate the byte[] of data to persist as a binary data. @Lob   @Basic(fetch = FetchType.LAZY)  public byte[] getPicture() { return picture;  }    exception : java.sql.SQLException: ERROR: column "picture" is of type bytea but expression is of type oid   Then i understood the issue with the data types.but when the hibernate generating the table it creates the  column with data type "oid" , after removing this annotation it creates a table column with "bytea" data type. and i'm in doubt which would be the most suitable data type to use.   Then i found the difference...
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Big Memory Go.

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Big Memory Go. Big Data is a Hot topic during these days. As Industry is moving towards the Big Data concept implementations and it adopted the Big data architecture by lots of leading software products. I would call this as a next frontier for the innovation, competition towards the productivity. The amount of data handling or processing in our world has been exploding, analysing of large data sets, This will become the key basis of future data handling. Big Data comes handy when it integrate with the Big Memory concept as well. Performance of the system is the key factor for any system and customer expecting a high performance system with high availability. Usually Java applications run with in the specified JVM memory configurations, What if we system wants to use the Server memory or ram directly?  Why keep unused memory in system resources ? Can you access system memory to save and retrieve objects effectively and store frequently used objects ...
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Microservices Architecture with Spring Boot in 15mins

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1. Introduction Microservices is not a new term. It coined in 2005 by Dr Peter Rodgers then called micro web services based on SOAP. It became more popular since 2010. Micoservices allows us to break our large system into number of independent collaborating processes. Lets see below microservices architecture. 1.1 What is Microservices Architecture? Microservices architecture allows to avoid monolith application for large system. It provide loose coupling between collaborating processes which running independently in different environments with tight cohesion. So lets discuss it by an example as below. For example imagine an online shop with separate microservices for user-accounts, product-catalog order-processing and shopping carts. So these components are inevitably important for such a large online shopping portal. For online shopping system we could use following architectures. 1.2 Shopping system without Microservices (Monolith architecture) In this architecture we are ...
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