Uncategorized Archive

Caching Explained

Caching Scheme The concept of caching is simple. If the data needed to satisfy the access request are not already cached, then a copy of those data is brought from the server to the client system. Accesses are performed on the cached copy. The idea is to retain recently accessed disk blocks in the cache,

Deploy resources in AWS quickly using AWS CloudFormation

  Cloud Formation is an infrastructure-as-code (IaC) product, where it allows developers and systems administrators with an   easy way to create and manage a collection of related AWS resources, provisioning and updating them in an orderly and predictable fashion .It make use of codes or templates to define infrastructure in order to create, modify and

How Virtual Reality and Augmented Reality will change the way we shop

Augmented reality in e -commerce may easily be the key for sitting on the throne of the online market. Two fundamentally different approaches for implementing AR in the retail industry: in-store and out-of-store. Experience AR through handheld devices, wearable such as AR glasses, or special AR hardware including smart interactive mirrors, fitting rooms, shop windows,

Apache Spark SQL

Catalyst (sql/catalyst) – An implementation-agnostic framework for manipulating trees of relational operators and expressions. Execution (sql/core) – A query planner / execution engine for translating Catalyst’s logical query plans into Spark RDDs. This component also includes a new public interface, SQLContext, that allows users to execute SQL or LINQ statements against existing RDDs and Parquet

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