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Recent Posts
Categories
- Design (2)
- Elasticsearch (3)
- Golang (5)
- hadoop (2)
- Java (11)
- Kubernetes (1)
- linux (1)
- Maven (1)
- Openshift (1)
- Performance (1)
- Scala (2)
- Security (3)
- Spark (2)
- Spring (2)
- Spring Batch (1)
- Spring Boot (1)
- sqoop (1)
- UI (1)
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annotation
apache hive 3
cdp
cloudera
commands
CORS
cronjob
design pattern
DNS
elastic
elasticsearch
go
golang
hadoop
hdfs
hive
http
ip
java
jms
junit
Kubernetes
mq
mysql
nginx
Openshift
oracle
proxy
proxy_pass
queue
rdbms
resolution
resolver
reverseproxy
scala
server
spark
spring
springboot
spring boot
sqoop
string
timezone
upstream
vim
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Different ways of implementing Singleton Design Pattern in Java
The singleton design pattern is used to restrict the instantiation of a class and ensures that only one instance of the class exists in the JVM. In other words, a singleton. read more…
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Elasticsearch : What, How and Why?
At its core, you can think of Elasticsearch as a server that can process JSON requests and give you back JSON data in near real-time.
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Locking in Hibernate using Java
In a relational database, locking refers to actions taken to prevent data from changing between the time it is read and the time is used.
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Make your own Java Annotations
Annotations, a form of metadata, provide data about a program that is not part of the program itself. Annotations have no direct effect on the operation of the code they annotate. Annotations have been a powerful part of Java, but most times we tend to use them rather than create them.
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Passing Data to Future Steps in Spring Batch
An ExecutionContext is a set of key-value pairs containing information that is scoped to either StepExecution or JobExecution. Spring Batch persists the ExecutionContext, which helps in cases where you want to restart a batch run (e.g., when a fatal error has occurred, etc.). All that is needed is to put any object to be shared between steps into the context and the framework will take care of the rest. After restart, the values from the prior ExecutionContext are restored from the database and applied.
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