Cloud Hosting

Automatic Vertical Scaling

Jelastic PaaS dynamically provides the range of cloudlets (i.E. RAM and CPU resources), that are required by using your utility to deal with the modern-day load.

Just specify the maximum limit, and the whole thing else might be achieved via the platform automatically - no manual intervention required.

This feature is called automatic vertical scaling and guarantees that you by no means overpay for unused capacities without experiencing a resource shortage.

Click the +/- buttons within the Horizontal Scaling section of the topology wizard to set the required number of nodes (load balancer will be added automatically).

Also, you can adjust the preferred scaling mode:

Stateless - simultaneously creates all new nodes from the base image template

Stateful - sequentially copies file system of the master container into the new nodes

Horizontal scaling can be performed not only manually but also automatically based on the current load on the node, which is monitored through the tunable triggers.

Within the Settings > Monitoring > Auto Horizontal Scaling section, you can adjust the scaling conditions due to your needs, i.e. the lower/upper limit (percentage) for the specified resource type during a certain period. If the load stays out of the set limits, the nodes removal/addition process will be called automatically.

There are Three different types of resources, which are monitored by triggers:

• CPU
• Memory (RAM)
• Network

Horizontal Scaling: Manual and Automatic

In case your application becomes highly popular and a single node is not enough, feel free to scale it horizontally. To ensure even more reliability and high-availability, all the newly added nodes are created on the different hardware nodes.

Click the +/- buttons within the Horizontal Scaling phase of the topology wizard to set the desired range of nodes (load balancer will be added automatically).

Also, you may alter the desired scaling mode:

• Stateless - concurrently creates all-new nodes from the base picture template
• Stateful - sequentially copies record machine of the master field into the new nodes

Horizontal scaling can be performed not simplest manually, however also automatically primarily based on the modern-day load on the node, that is monitored through the tunable triggers.

Within the Settings > Monitoring > Auto Horizontal Scaling phase, you could regulate the scaling conditions due to your needs, i.e. The lower/top limit (percentage) for the specified aid kind during a sure period.

The trigger starts monitoring the resource consumption immediately after addition, and when the usage level exceeds the stated limit, a trigger becomes invoked. Subsequently, if the load persists for a defined period, it will be executed, adjusting the number of nodes.

Java Clusterization

The embedded application server clustering feature provides replication of sessions between pairs of nodes and eliminates the necessity of additional software or Memcached usage for increasing application availability.

Jelastic provides automated session replication between Tomcat and TomEE servers with the help of multicast to gain web application high availability within the Java cluster. This High-Availability feature can be enabled in the wizard during environment creation or topology tuning.

Herewith, the newer modern Auto-Clustering solution is provided for the GlassFish, Payara, and WildFly stacks:

Out-of-Box GlassFish & Payara Clustering

WildFly Automatic Micro Clustering and Scaling

Database Connection to Java Application

A set of scalable and fully plausible database servers can be effortlessly installed within the Java environment. To establish the connection, modify your utility following the instruction based totally on the database you require:

• MySQL and MariaDB Connection
• PostgreSQL Connection
• MongoDB Connection

Jelastic PaaS provides incredible Java website hosting with stepped forward availability, redundancy, and scalability strengths on your application.

The feedback from Java creator James Gosling about Jelastic PaaS:

“Configuring cloud infrastructures is a laugh the primary time you do it. But it doesn’t take too long earlier than it will become a tedious time sink, And, when you have the misfortune of being a software developer that has to combat it out with an IT organization, who commonly desires consistency, control, and visibility, you find that you’re continually fighting with them. Jelastic solves all of that. Easy configuration tools for developers, management gear for IT. Peace and productivity. I love it!”