How do you make a Java application scalable?

Scaling Java Web Applications Because access to the external bottleneck is removed, the application can scale linearly, just by adding more nodes to the cluster.

How do you create a highly scalable system in Java?

General Principles

  1. “Scalability” is not equivalent to “Raw Performance”
  2. Understand environmental workload conditions that the system is design for.
  3. Scale out and Not scale up.
  4. Keep your code modular and simple.
  5. Don’t guess the bottleneck, Measure it.
  6. Plan for growth.
  7. Server Farm (real time access)
  8. Data Partitioning.

How do you make a scalable web service?


  1. Choose a horizontal scale over a vertical one.
  2. Take work away from the core.
  3. API first.
  4. Make sure to cache everything.
  5. Design for maintenance and process automation.
  6. Choose asynchronism.
  7. Aim for statelessness in your app.

Why is Tomcat so slow?

Slow start up times for Tomcat are often related to Java’s SecureRandom implementation. By default, it uses /dev/random as an entropy source. This can be slow as it uses system events to gather entropy (e.g. disk reads, key presses, etc).

How is Java scalability?

Java EE is considered scalable because if you consider the EJB architecture and run on an appropriate application server, it includes facilities to transparently cluster and allow the use of multiple instances of the EJB to serve requests.

How can you improve application scalability?

The best solution to most database scalability issues is optimizing SQL queries and implementing indexing strategies. By building articles and authors into a single query, you can dramatically reduce the volume of queries you’re running.

What is Java scalability?

Scalability means that an application can deal with more and more users by changing the hardware configuration rather than the application itself. Typically this means, among other things, that it’s partitioned into pieces that can run on separate servers.

Is Java a scalable language?

Java does not scale any better, or worse, than any other general purpose language. How easily can you increase the number of requests/sec the system can handle derives from the architecture of the system (sharding, caching, avoid database etc).

How do you increase the scalability of a web application?

What requirements are needed to make a service scalable?

Requirements of Scalable Applications

  • Performance: First and foremost, the system must operate well under stress with low latency.
  • Availability and Reliability: These are closely related and equally necessary.
  • Cost: Highly scalable apps don’t have to be unreasonably expensive to build, maintain, or scale.

How can I make Tomcat run faster?

How do I make Tomcat startup faster?

  1. General.
  2. JAR scanning. Configure your web application. Remove unnecessary JARs. Exclude JARs from scanning. Disable WebSocket support.
  3. Entropy Source.
  4. Starting several web applications in parallel.
  5. Other. Memory. Config. Web application.

How does Tomcat optimize performance in production?

Tomcat performance tuning tips

  1. Start the JVM with a higher heap memory maximum using the -Xmx switch.
  2. Start the JVM with its initial heap memory size (the -Xms switch) set the same value as its maximum memory size.
  3. Tune the Connector (web server) thread pool settings to more closely match the web request load you have.