Kotlin + SpringBoot JPA + MySQL- Save/retrieve Files/Images with @Lob annotation

https://grokonez.com/spring-framework/spring-boot/kotlin-spring-boot/kotlin-springboot-jpa-mysql-saveretrieve-filesimages-lob-annotation

Kotlin + SpringBoot JPA + MySQL- Save/retrieve Files/Images with @Lob annotation

In the tutorial, <a href=“http”//grokonez.com">JavaSampleApproach will show you how to create a SpringBoot Kotlin project that uses SpringJPA with @Lob annotation to save Files/Images to MySQL database.

I. Technologies

– Kotlin 1.2.20 – Apache Maven 3.5.2 – Spring Tool Suite – Version 3.9.0.RELEASE - MySQL – Spring Boot – 1.5.10.RELEASE

II. Goal

– We create a SpringBoot project to save files/images to MySQL database as below structure: Kotlin Spring JPA save Files Images to MySQL - pre

Create MySQL table:

Kotlin Spring JPA save Files Images to MySQL - create mysql table

-> Run and check results:

Kotlin Spring JPA save Files Images to MySQL - result Kotlin Spring JPA save Files Images to MySQL - goal

III. Practice

Step to do: – Create SpringBoot Kotlin project – Create data model – Create JPA Repository – Implement Client to save/retrieve files/images – Configure JPA connection & MySQL script

1. Create SpringBoot Kotlin project

Using SpringToolSuite to create a SpringBoot project with dependencies:

More at:

https://grokonez.com/spring-framework/spring-boot/kotlin-spring-boot/kotlin-springboot-jpa-mysql-saveretrieve-filesimages-lob-annotation

#kotlin #springboot #springjpa #mysql #lob

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Buddha Community

Kotlin + SpringBoot JPA + MySQL- Save/retrieve Files/Images with @Lob annotation

Kotlin + SpringBoot JPA + MySQL- Save/retrieve Files/Images with @Lob annotation

https://grokonez.com/spring-framework/spring-boot/kotlin-spring-boot/kotlin-springboot-jpa-mysql-saveretrieve-filesimages-lob-annotation

Kotlin + SpringBoot JPA + MySQL- Save/retrieve Files/Images with @Lob annotation

In the tutorial, <a href=“http”//grokonez.com">JavaSampleApproach will show you how to create a SpringBoot Kotlin project that uses SpringJPA with @Lob annotation to save Files/Images to MySQL database.

I. Technologies

– Kotlin 1.2.20 – Apache Maven 3.5.2 – Spring Tool Suite – Version 3.9.0.RELEASE - MySQL – Spring Boot – 1.5.10.RELEASE

II. Goal

– We create a SpringBoot project to save files/images to MySQL database as below structure: Kotlin Spring JPA save Files Images to MySQL - pre

Create MySQL table:

Kotlin Spring JPA save Files Images to MySQL - create mysql table

-> Run and check results:

Kotlin Spring JPA save Files Images to MySQL - result Kotlin Spring JPA save Files Images to MySQL - goal

III. Practice

Step to do: – Create SpringBoot Kotlin project – Create data model – Create JPA Repository – Implement Client to save/retrieve files/images – Configure JPA connection & MySQL script

1. Create SpringBoot Kotlin project

Using SpringToolSuite to create a SpringBoot project with dependencies:

More at:

https://grokonez.com/spring-framework/spring-boot/kotlin-spring-boot/kotlin-springboot-jpa-mysql-saveretrieve-filesimages-lob-annotation

#kotlin #springboot #springjpa #mysql #lob

Joe  Hoppe

Joe Hoppe

1595905879

Best MySQL DigitalOcean Performance – ScaleGrid vs. DigitalOcean Managed Databases

HTML to Markdown

MySQL is the all-time number one open source database in the world, and a staple in RDBMS space. DigitalOcean is quickly building its reputation as the developers cloud by providing an affordable, flexible and easy to use cloud platform for developers to work with. MySQL on DigitalOcean is a natural fit, but what’s the best way to deploy your cloud database? In this post, we are going to compare the top two providers, DigitalOcean Managed Databases for MySQL vs. ScaleGrid MySQL hosting on DigitalOcean.

At a glance – TLDR
ScaleGrid Blog - At a glance overview - 1st pointCompare Throughput
ScaleGrid averages almost 40% higher throughput over DigitalOcean for MySQL, with up to 46% higher throughput in write-intensive workloads. Read now

ScaleGrid Blog - At a glance overview - 2nd pointCompare Latency
On average, ScaleGrid achieves almost 30% lower latency over DigitalOcean for the same deployment configurations. Read now

ScaleGrid Blog - At a glance overview - 3rd pointCompare Pricing
ScaleGrid provides 30% more storage on average vs. DigitalOcean for MySQL at the same affordable price. Read now

MySQL DigitalOcean Performance Benchmark
In this benchmark, we compare equivalent plan sizes between ScaleGrid MySQL on DigitalOcean and DigitalOcean Managed Databases for MySQL. We are going to use a common, popular plan size using the below configurations for this performance benchmark:

Comparison Overview
ScaleGridDigitalOceanInstance TypeMedium: 4 vCPUsMedium: 4 vCPUsMySQL Version8.0.208.0.20RAM8GB8GBSSD140GB115GBDeployment TypeStandaloneStandaloneRegionSF03SF03SupportIncludedBusiness-level support included with account sizes over $500/monthMonthly Price$120$120

As you can see above, ScaleGrid and DigitalOcean offer the same plan configurations across this plan size, apart from SSD where ScaleGrid provides over 20% more storage for the same price.

To ensure the most accurate results in our performance tests, we run the benchmark four times for each comparison to find the average performance across throughput and latency over read-intensive workloads, balanced workloads, and write-intensive workloads.

Throughput
In this benchmark, we measure MySQL throughput in terms of queries per second (QPS) to measure our query efficiency. To quickly summarize the results, we display read-intensive, write-intensive and balanced workload averages below for 150 threads for ScaleGrid vs. DigitalOcean MySQL:

ScaleGrid MySQL vs DigitalOcean Managed Databases - Throughput Performance Graph

For the common 150 thread comparison, ScaleGrid averages almost 40% higher throughput over DigitalOcean for MySQL, with up to 46% higher throughput in write-intensive workloads.

#cloud #database #developer #digital ocean #mysql #performance #scalegrid #95th percentile latency #balanced workloads #developers cloud #digitalocean droplet #digitalocean managed databases #digitalocean performance #digitalocean pricing #higher throughput #latency benchmark #lower latency #mysql benchmark setup #mysql client threads #mysql configuration #mysql digitalocean #mysql latency #mysql on digitalocean #mysql throughput #performance benchmark #queries per second #read-intensive #scalegrid mysql #scalegrid vs. digitalocean #throughput benchmark #write-intensive

Roger Max

Roger Max

1613115839

Best Image Annotation Services for Machine Learning AI Companies

Image Annotation with Best Quality
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iText PDF + Kotlin SpringBoot RestAPI + MySQL » grokonez

https://grokonez.com/spring-framework/spring-boot/kotlin-spring-boot/itext-pdf-kotlin-springboot-restapi-mysql

iText PDF + Kotlin SpringBoot RestAPI + MySQL

In the tutorial, we show you how to create a Kotlin SpringBoot RestAPIs application that uses Spring JPA & iText PDF library to extract data from MySQL records to a PDF file in table format.

Related posts:

Technologies

- Kotlin – SpringBoot – iText 5.0.6 – MySQL

Practice

Project Structure -> kotlin-springboot-restapi-download-pdf-file-spring-jpa-mysql-itextpdf-project-structure

Create Kotlin SpringBoot project

Use SpringToolSuite to create a Kotlin SpringBoot project with below dependencies:

More at:
https://grokonez.com/spring-framework/spring-boot/kotlin-spring-boot/itext-pdf-kotlin-springboot-restapi-mysql

#kotlin #springboot #itext #pdf #mysql

Kotlin - Spring Security JDBC Authentication - SpringBoot + MySQL + Bootstrap » grokonez

https://grokonez.com/spring-framework/spring-boot/kotlin-spring-boot/kotlin-spring-security-jdbc-authentication-springboot-mysql-bootstrap

Kotlin – Spring Security JDBC Authentication – SpringBoot + MySQL + Bootstrap

In the tutorial, JavaSampleApproach will show you how to create a Kotlin Spring Security JDBC Authentication with SpringBoot + MySQL + Bootstrap.

I. Technologies

– Kotlin 1.2.20 – Apache Maven 3.5.2 – Spring Tool Suite – Version 3.9.0.RELEASE – Spring Boot – 1.5.10.RELEASE – Bootstrap - MySQL

II. Goal

We create a Kotlin MVC Web Application as below: Kotlin Spring Security JDBC Authentication - project structure

With 5 urls:

– ‘/’: access with everyone.

Kotlin Spring Security JDBC Authentication - home pagepng

– ‘/user’: must authenticate and be accessed with user ROLE {USER, ADMIN}

Kotlin Spring Security JDBC Authentication - users

– ‘/admin’: accessed by user with role Admin

Kotlin Spring Security JDBC Authentication - admin

– ‘/login’: login page

Kotlin Spring Security JDBC Authentication - login

– ‘/403’: HTTP Error 403 Forbidden

Kotlin Spring Security JDBC Authentication - access-denied

We create 2 MySQL tables for 2 users (username/password):

  • jack/jack has 2 roles {USER, ADMIN}
  • peter/peter has 1 role USER
Kotlin Spring Security JDBC Authentication - tables

-> jack/jack can access both pages {user.html, admin.html}. While peter/peter just accesses 1 page user.html.

III. Implementation

– Create Kotlin Spring Boot project – Create Controller – Create View Pages – Configure Database – Configure WebSecurity

1. Create Kotlin Spring Boot project

Use SpringToolSuite to create a Kotlin SpringBoot project with below dependencies:

More at:

https://grokonez.com/spring-framework/spring-boot/kotlin-spring-boot/kotlin-spring-security-jdbc-authentication-springboot-mysql-bootstrap

Kotlin – Spring Security JDBC Authentication – SpringBoot + MySQL + Bootstrap

#kotlin #springsecurity #jdbc-authentication #springboot #mysql #bootstrap