A new version of this fabulous document-oriented database manager has recently been released. That is to say that it is a NoSQL database manager.

One of the main characteristics of this program is that it allows the partial replication of the data. Therefore, it is widely used in companies of the caliber of Apple, BBC, and others.

On the other hand, CouchDB bases its strength on the logical composition of the data. It forgets about SQL relationships and focuses on self-contained documents that are even closer to reality.

All the above would not be possible if the engine was not prepared and it is developed in Earlang language optimized for these tasks.

To all this, the development of the application is very active and proof of this is the release of version 3.

We will keep an eye on it.

Apache CouchDB 3.0 features

There are many new features in this new version of Apache CouchDB, but the main ones are the following:

• Default installations are now secure and locked down. This increases the security in the defect installations.
• The default maximum document size has been reduced to 8MB. Documents that exceed this size will have problems replicating unless modifications are made.
• CouchDB 3.0 now requires a server admin user to be defined at startup or will print an error message and exit.
• All databases are now created by default as admin-only.

Also, note that some functions will be removed in the next version of Apache CouchDB. Some of them are:

• Show functions (/{db}/{ddoc}/_show)
• List functions (/{db}/{ddoc}/_list)
• Virtual hosts and ini-file rewrites
• Rewrite functions (/{db}/{ddoc}/_rewrite)

Also, other equally important features are:

• Updated to modern JavaScript engine SpiderMonkey 60
• Official support for ARM and PPC 32bit and 64bit systems
• Many large and small performance improvements
• Automatic view index warmer
• Smarter Compaction Daemon

As we see, it’s a pretty important release and it’s a correct evolution of a great program.

Conclusion

Everyday programs have to move forward to incorporate improvements or simply improve what they already do. Apache CouchDB is proof that great software can evolve and become even better.

In this post, we have examined the most important news of this release, but there is much more.

If you want to know the rest of the news, you can check the release notes.

Also, I invite you to read our post about CouchDB:

How to install Apache CouchDB on Debian 10?

How to install Apache CouchDB on CentOS 8?

Or, if you use Ubuntu:

How to install Apache CouchDB on Ubuntu 18.04?

So, please share this post and join our Telegram Channel.

The post Apache CouchDB 3.0 available appeared first on Linux Windows and android Tutorials.

CouchDB is a database manager for the web. It takes care of saving and storing NoSQL type data for server-side applications. It is widely used and its learning curve is very low.

On the other hand, CouchDB places a lot of emphasis on data replication as a persistent way to obtain data. That is, we will be able to connect multiple nodes and from there do the replication.

Of course, there are a lot of features and reasons why this project of the Apache Foundation is so important today.

So, let us start.

Install CouchDB on CentOS 8

There are several ways to install CouchDB on CentOS 8. Perhaps the most complex is to compile the program ourselves. Of course, this option guarantees that you always get the latest stable version.

On the other hand, there is the option of downloading and installing pre-compiled binary packages. And finally, we can install CouchDB on CentOS using the application repository. This last one will be the option to choose.

So let’s get started.

First, we need to add the CouchDB repository for CentOS 8. To do this, we need to create a text file in the system’s repository directory.

:~$ su
:~# nano /etc/yum.repos.d/bintray-apache-couchdb-rpm.repo

And in it, add the following content:

[bintray--apache-couchdb-rpm]
name=bintray--apache-couchdb-rpm
baseurl=http://apache.bintray.com/couchdb-rpm/el$releasever/$basearch/
gpgcheck=0
repo_gpgcheck=0
enabled=1

Save the file and close it.

Then, the EPEL repository must be enabled. You can do it quickly, with the following command

:~# dnf install epel-release

If you want more information about how to enable the EPEL repository, I recommend you to read our post:

How to enable the EPEL repository on CentOS 8?

After this, we can install couchDB with the following command:

:~# dnf install couchdb

And that’s it. However, before using it, there are some settings to be made.

Preparing CouchDB for the first use

Remember that CouchDB works through port 5984. So, the first thing is to open that port in the firewall.

:~# firewall-cmd --add-port=5984/tcp --permanent --zone=public
Success

And then, restart the firewall to apply the changes.

:~# firewall-cmd --reload
Success

Now we have to enable the CouchDB web interface.

So, open the CouchDB configuration file and find the admins section and set a password there for the admin user.

:~# nano /opt/couchdb/etc/local.ini

admin = your-password

Then go to the chttpd section in the same file and uncomment the port and bind_address lines. In the port you can change the default port of the application. And in Bind_address the IP address that serves the interface. If you are going to use a cluster, you must type 0.0.0.0.

port = 5984
bind_address = 0.0.0.0

Now if you can, save and close the file.

Finally, the CouchDB service begins. It is also a good idea to enable it to start with the system.

:~# systemctl enable couchdb
:~# systemctl start couchdb

CouchDB on CentOS 8

Now open your favorite web browser and go to http://your-server:5984/_utils and you will see the Login screen.

Just type your credentials and click on the Log in button. You will see this:

Finally, you can test the installation.

So, enjoy it.

Conclusion

CouchDB is clearly oriented to the professional web sector. However, its learning curve is low with respect to its power. Despite this, CouchDB is easily installable as we have seen.

Apache CouchDB documentation

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The post How to install Apache CouchDB on CentOS 8? appeared first on Linux Windows and android Tutorials.

CouchDB is a database manager for the web. It takes care of saving and storing NoSQL type data for server-side applications. It is widely used and its learning curve is very low.

On the other hand, CouchDB places a lot of emphasis on data replication as a persistent way to obtain data. That is, we will be able to connect multiple nodes and from there do the replication.

Of course, there are a lot of features and reasons why this project of the Apache Foundation is so important today.

So, let us start.

Install CouchDB on Debian 10

Apache CouchDB has installers for Linux. There is even a package repository that makes it very easy to install. In this sense, it is convenient to use it.

First, add the CouchDB repository for Debian 10.

:~$ echo "deb https://apache.bintray.com/couchdb-deb buster main" | sudo tee -a /etc/apt/sources.list
deb https://apache.bintray.com/couchdb-deb buster main

To secure the installation, it is necessary to add the GPG key to the repository. However, some necessary packages must be installed first:

:~$ sudo apt install curl gnupg

Once we have them installed, we can add the GPG key.

:~$ curl -L https://couchdb.apache.org/repo/bintray-pubkey.asc | sudo apt-key add -
OK

Now, we have to refresh the APT cache and then install CouchDB on Debian 10.

:~$ sudo apt update
:~$ sudo apt install couchdb

During the installation, we will be asked to make some small adjustments.

First, if couchdb will work on a node, or if we are configuring a cluster.

Then, we will be able to establish the IP address of the cluster or node. In this case, by choosing the address 0.0.0.0 we can make the equipment accessible to all the network interfaces.

Then, you need to define a strong password. After that, Apache CouchDB is ready to work.

Using the CouchDB web interface

Managing Apache CouchDB is really easy thanks to its powerful web interface. So let’s get to it.

Open your favorite web browser and go to http://your-server:5984/_utils. Remember that in “your-server” you have to put the IP address of the server or its DNS.

As you can see, the application uses port 5984. So, if you have a firewall working, you have to open that port.

Well, you will see this screen:

The username is admin and the password that you have defined before. Once you have done that, you will see this:

Then, it is a good idea to verify that the entire installation has been a success. For this, on the left side, there is a button that has a check mark. Click on it and then on the Verify installation button.

As you can see in the picture, the installation has been a success.

Finally, you can configure a cluster or a specific node. This is already to your needs.

So, that is it. You can start to work.

Conclusion

Apache CouchDB is a database manager clearly focused on the professional environment, but this does not prevent it from being used in learning and personal environments. So today you have learned how to install it on a server with Debian 10.

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The post How to install Apache CouchDB on Debian 10? appeared first on Linux Windows and android Tutorials.