Fast Serialization | Fast Java Serialization Drop in-replacement

fast-serialization

• up to 10 times faster 100% JDK Serialization compatible drop-in replacement (Ok, might be 99% ..). As an example: Lambda Serialization which came with 1.8 worked instantly.
• Android compatible since version >= 2.17 (use FSTConfiguration.createAndroidDefaultConfiguration() both on server and client side. The configuration object has to be passed into FSTObjectIn/Output constructors)
• OffHeap Maps, Persistent OffHeap maps
• FSTStructs is very similar to IBM's packed objects. Difference is: You can run it with Oracle JDK today.
• optionally en/decode any Serializable object graph to JSON (incl. shared references) (since 2.29) for interop
• Apache 2.0 license since 2.17

mvn

note: maven.org might lag 1 day behind after releasing.

3.0.0 version (requires java 14, "--add-modules jdk.incubator.foreign" option on compiler and runtime)

<dependency>
    <groupId>de.ruedigermoeller</groupId>
    <artifactId>fst</artifactId>
    <version>3.0.1</version>
</dependency>

2.0 version (java 8)

<dependency>
    <groupId>de.ruedigermoeller</groupId>
    <artifactId>fst</artifactId>
    <version>2.56</version>
</dependency>

jdk1.6 compatible build of fst 2.x

<dependency>
    <groupId>de.ruedigermoeller</groupId>
    <artifactId>fst</artifactId>
    <version>2.48-jdk-6</version>
</dependency>

1.x version (different package name, 1.6 compatible ..). Fixes are not backported anymore, unsupported.

<dependency>
    <groupId>de.ruedigermoeller</groupId>
    <artifactId>fst</artifactId>
    <version>1.63</version>
</dependency>

Who uses FST ?

I am not actively tracking use, maven.org reports more than 14000 downloads from 6000 distinct IP accesses triggered by maven builds world wide per month.

Notable also:

• used in production in Eurex Exchange's trading back end's middleware
• JUptr.io's distributed system / NLP engine uses FST
• Popular Apache Wicket supplementals use FST to speed up Wicket

how to build

• master contains dev branch/trunk.
• 1.x contains old version
• The maven build should work out of the box and reproduces the artifact hosted on maven.org
• To use the gradle build, you need to configure the proxy server in settings.properties (or just set empty if you do not sit behind a proxy).

Note that instrumentation done for fst-structs works only if debug info is turned on during compile. Reason is that generating methods at runtime with javassist fails (probably a javassist bug ..). This does not affect the serialization implementation.

JDK 1.6 Build 1.x build since v1.62 are still jdk 6 compatible

Docs:

Fast JDK-compatible Serialization

Json Serialization

OffHeap + Persistent Maps

MinBin cross platform binary format

Kson: a JSon extension

Download details:
Author: RuedigerMoeller
Source code: https://github.com/RuedigerMoeller/fast-serialization
License: Apache-2.0 license

#java #serialization

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Buddha Community

How to Install OpenJDK 11 on CentOS 8

What is OpenJDK?

OpenJDk or Open Java Development Kit is a free, open-source framework of the Java Platform, Standard Edition (or Java SE). It contains the virtual machine, the Java Class Library, and the Java compiler. The difference between the Oracle OpenJDK and Oracle JDK is that OpenJDK is a source code reference point for the open-source model. Simultaneously, the Oracle JDK is a continuation or advanced model of the OpenJDK, which is not open source and requires a license to use.

In this article, we will be installing OpenJDK on Centos 8.

#tutorials #alternatives #centos #centos 8 #configuration #dnf #frameworks #java #java development kit #java ee #java environment variables #java framework #java jdk #java jre #java platform #java sdk #java se #jdk #jre #open java development kit #open source #openjdk #openjdk 11 #openjdk 8 #openjdk runtime environment

Going Beyond Java 8: Local Variable Type Inference (var) - DZone Java

According to some surveys, such as JetBrains’s great survey, Java 8 is currently the most used version of Java, despite being a 2014 release.

What you are reading is one in a series of articles titled ‘Going beyond Java 8,’ inspired by the contents of my book, Java for Aliens. These articles will guide you step-by-step through the most important features introduced to the language, starting from version 9. The aim is to make you aware of how important it is to move forward from Java 8, explaining the enormous advantages that the latest versions of the language offer.

In this article, we will talk about the most important new feature introduced with Java 10. Officially called local variable type inference, this feature is better known as the **introduction of the word **var. Despite the complicated name, it is actually quite a simple feature to use. However, some observations need to be made before we can see the impact that the introduction of the word var has on other pre-existing characteristics.

#java #java 11 #java 10 #java 12 #var #java 14 #java 13 #java 15 #verbosity

Fast Serialization | Fast Java Serialization Drop in-replacement

fast-serialization

• up to 10 times faster 100% JDK Serialization compatible drop-in replacement (Ok, might be 99% ..). As an example: Lambda Serialization which came with 1.8 worked instantly.
• Android compatible since version >= 2.17 (use FSTConfiguration.createAndroidDefaultConfiguration() both on server and client side. The configuration object has to be passed into FSTObjectIn/Output constructors)
• OffHeap Maps, Persistent OffHeap maps
• FSTStructs is very similar to IBM's packed objects. Difference is: You can run it with Oracle JDK today.
• optionally en/decode any Serializable object graph to JSON (incl. shared references) (since 2.29) for interop
• Apache 2.0 license since 2.17

mvn

note: maven.org might lag 1 day behind after releasing.

3.0.0 version (requires java 14, "--add-modules jdk.incubator.foreign" option on compiler and runtime)

<dependency>
    <groupId>de.ruedigermoeller</groupId>
    <artifactId>fst</artifactId>
    <version>3.0.1</version>
</dependency>

2.0 version (java 8)

<dependency>
    <groupId>de.ruedigermoeller</groupId>
    <artifactId>fst</artifactId>
    <version>2.56</version>
</dependency>

jdk1.6 compatible build of fst 2.x

<dependency>
    <groupId>de.ruedigermoeller</groupId>
    <artifactId>fst</artifactId>
    <version>2.48-jdk-6</version>
</dependency>

1.x version (different package name, 1.6 compatible ..). Fixes are not backported anymore, unsupported.

<dependency>
    <groupId>de.ruedigermoeller</groupId>
    <artifactId>fst</artifactId>
    <version>1.63</version>
</dependency>

Who uses FST ?

I am not actively tracking use, maven.org reports more than 14000 downloads from 6000 distinct IP accesses triggered by maven builds world wide per month.

Notable also:

• used in production in Eurex Exchange's trading back end's middleware
• JUptr.io's distributed system / NLP engine uses FST
• Popular Apache Wicket supplementals use FST to speed up Wicket

how to build

• master contains dev branch/trunk.
• 1.x contains old version
• The maven build should work out of the box and reproduces the artifact hosted on maven.org
• To use the gradle build, you need to configure the proxy server in settings.properties (or just set empty if you do not sit behind a proxy).

Note that instrumentation done for fst-structs works only if debug info is turned on during compile. Reason is that generating methods at runtime with javassist fails (probably a javassist bug ..). This does not affect the serialization implementation.

JDK 1.6 Build 1.x build since v1.62 are still jdk 6 compatible

Docs:

Fast JDK-compatible Serialization

Json Serialization

OffHeap + Persistent Maps

MinBin cross platform binary format

Kson: a JSon extension

Download details:
Author: RuedigerMoeller
Source code: https://github.com/RuedigerMoeller/fast-serialization
License: Apache-2.0 license

#java #serialization

Spring Boot and Java 16 Records

In this article, we will discuss Java 16’s newest feature, Records. Then we will apply this knowledge and use it in conjunction with a Spring Boot application.

On March 16th, 2021, Java 16 was GA. With this new release, tons of new exciting features have been added. Check out the release notes to know more about these changes in detail. This article’s focus will be on Java Records, which got delivered with JEP 395. Records were first introduced in JDK 14 as a preview feature proposed by JEP 359, and with JDK 15, they remained in preview with JEP 384. However, with JDK 16, Records are no longer in preview.

I have picked Records because they are definitely the most favored feature added in Java 16, according to this Twitter poll by Java Champion Mala Gupta.

I also conducted a similar survey, but it was focused on features from Java 8 onwards. The results were not unexpected, as Java 8 is still widely used. Very unfortunate, though, as tons of new features and improvements are added to newer Java versions. But in terms of features, Java 8 was definitely a game-changer from a developer perspective.

So let’s discuss what the fuss is about Java Records.

#java #springboot #java programming #records #java tutorials #java programmer #java records #java 16

Java Serialization Interview Questions & Answers [For Beginners & Experienced]

Java is one of the better programming languages out there in the world. We have been fortunate enough to see Java develop over time and become the massively popular language we know it as today. These improvements, which were made in Java, led to the inclusion of some really crucial features that define how we write programs today. One of those features is Serialization.

In its essence, serialization is just a mechanism used to store an object into the memory. So, when we say we are serializing an object, we mean that we are converting the object in question from the state, which it was into a stream of bytes. This conversion from its native state to the byte stream makes writing this object to a file a breeze.

This file can then be transported anywhere we wish, and to access the object and its features, all we need to do is de-serialize the object. De-serialization, as the name suggests, is the opposite of serialization. Here, we convert the byte’s stream into the native state of the object to use the object.

Serialization enables developers to write their code with a certain level of flexibility. The ability to take the object and use it with its native property elsewhere is crucial in today’s workflow. No wonder recruiters want their potential employees to know more about object serialization in java.

Whether you have used serialization in your projects or not, you cannot merely let the importance of it slide. So, to aid you in your endeavor of becoming a professional java developer, we have collected some fascinating java serialization interview questions, which you will find below.

#full stack development #java serialization #java serialization interview #java serialization interview questions