I wanted to use RDS to store data created within my webapp.
I am already storing data in dynamo tables and can pipe the same data into S3 files.
Due to some project requirements, I wanted to store the data into RDS tables. I havent found any resources to help me find a way to use the AWS Java SDK to store data incrementally into RDS.
Does any one know of a way to do that? Or is there any way to achieve that via some other way?
Thanks a lot for you help!
You can't use the AWS SDK to store data in Amazon RDS like Dynamo DB. RDS is a managed database service that hosts many different database engines (Amazon Aurora, MySQL, MariaDB, Oracle, SQL Server, and PostgreSQL database engines) that each have their own clients and protocols for transferring data.
You'll need to evaluate these database engines separately, determine which one you want to use, and use a client for that engine to read and write your data.
The AWS SDK and APIs can be used to provision and modify your RDS DB instances (the servers hosting your database) but not to manipulate or read the data itself. You can view the API documentation for a full listing of available actions.
After digging up myself and Anthony helping me out with clarification, I understand it better.
In case anyone else comes here searching for the same issue:
The endpoint that is provided for the database you create in RDS can be used to write into the table or execute any db query, for that matter.
Here is a nice tutorial to get you started.
http://zetcode.com/db/postgresqljavatutorial/
Good luck guys.
Just came accross this post. My understanding is that you don't need AWS SDK:
you make the databse accessible from the Internet
you use traditional jdbc calls as with any other db
This info is in the manual of the management console, but it is valid in general:
https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/java-rds.html
Related
I wanted the code example for the following AWS Serverless program.
I wanted to write Java Lambda to connect with Postgres SQL and store the data and retrieve the data. I am not able to find the documentation properly.
Also, need a dependency for pom.xml.
I have cluster identifier, DB name, and DB credentials.
How to connect with Postgres DB in a serverless way?
How to query it?
Code example for Java
How to connect with Postgres DB in a serverless way?
There isn't a "serverless' way to connect to a standard PostgreSQL database. You have to use standard JDBC connections just like any other Java app. You might look into using Amazon RDS Proxy to eliminate some of the issues inherent in connecting serverless functions to a standard RDS database.
If you switched to an Amazon Aurora Serverless database, then you could utilize the Data API, which is a great solution for serverless database queries.
I have like 150 TB of JSON documents which are stored on my Personal windows Driver. I am moving those drivers to Microsoft Azure Storage Account. I want to pull that JSON data and post it on Kafka. And from Kafka I want to push to Couchbase using Kafka-couch connector. Whats the best approach and procedure to do? (Keeping Replication of data in mind)
Azure ---> Kafka ---> Couchbase
or Azure ---> Couchbase.
or Windows Drivers ---> Couchbase
Based on your needs, I offer you two alternatives.
The first option, in which you create your own programs to get data from Azure Blob Storage and push data to Kafka.You can use the WebJob to run it in Azure Web App Service.
This option is time-consuming, but it costs less.
You can refer to the snippet of code below or get more details of pushing data to kafka via java from here.
The second option ,in which you can use Azure HDInsight Service and follow the official document to access data stored in Azure Blob Storage via the syntax:
wasb[s]://<containername>#<accountname>.blob.core.windows.net/<path>.
Then , please download HDFS (Sink) Connectors on this site to push Json data to Kafka from HDInsight.
This option saves time, but it costs more.
You also could refer to the SO thread Kafka Connector for Azure Blob Storage and just choose one of the two options according to your needs.
Hope it helps you.
Im workings on java project.its a desktop application (financial application).
I want to when user in offline save all data in embedded database (H2 database) and when user come to online or click on some button save all the new data on Standalone database(My SQL server) server.
Right now i kindda lost with this scenario.
Can some one describe how this should be done or is this possible.
Based on Assumption as your question seem to pointing below requirement,
you have local H2 database
mysql may be on other network.
If you save some data on application then goes to h2 database
one you connected to internet the data should go to mysql database which is on differnet host from h2 local database where application is running.
Solution :
you need to add replication tools which replicate data from one database to another seemlessly.
Refer One of the nice tool : https://www.symmetricds.org/
Let me know if you have any other requirement. Also please provide enough details when raising the questions. Thanks.
Replicating data from H2 DB to Mysql DB using a replicator tool is one way.
Other way to achieve the same is rather than creating a heavy in-memory DB instance on client machine is you can write the same data in file on client machine at some location and write a scheduler program which will check the heart beat of socket and if ping to your server is successful you can read file and upload the data to your actual DB server. Also Writing your own scheduler and data uploader will give you more control.
Other issue with any replicator tool is data type compatibility.
Still if you want to go ahead with any replication tool- you can have a look at Tungsten Replicator - https://docs.continuent.com/tungsten-replicator-4.0/deployment-oracle-fromoracle.html
I have developed a REST web-service in Java interacting with a MySQL database.I want to deploy the web-service and the create a database at a server so that I can invoke it from an application.I tried Microsoft Azure but was unable to get it done.Where can I find relevant information for this?
I had similar problems with a MySQL database using the third party option in the Azure Marketplace from ClearDb. What I ended up doing was switching my database from a MySQL instance to an Azure Database Instance (Subset of SQL Server's features.) This worked perfectly for me! I was able to query from my database feed data to my api, and access the API through my Azure Web App.
I understand this may not be an option for you, however, Digital Ocean is a great cloud hosting option (with scaling similar to Azure, although not as good in my honest opinion.) You can set up a Linux Environment with a MySQL Server and JVM and serve your whole API through there. Best of Luck!
#coderden, According to your description, I think you have been deployed your Java Application on an Azure WebApp. Then when you created a MySQL database on Azure for connection from the Java webapp, please make sure the webapp & mysql instance created in a same resource group and note the connection string of MySQL on Azure.
As reference, please see the article to try again although it's for PHP, the steps are the same for Java.
I want to fetch all the names of tables present in a database, which is present in a Google CloudSQL instance. Is this possible through their Java Client libraries (Java SDK).
I know 'gcloud (command line)' can be used, but I want to do every call using Java APIs. Please help. Thanks. :)
Yes, it's possible. You can enable MySQL Connector/J in your Java App Engine application:
https://cloud.google.com/appengine/docs/java/cloud-sql/#enable_connector_j
Connect and communicate with your database. Check this document:
https://cloud.google.com/appengine/docs/java/cloud-sql/