Microservices Issues: Managing Damage Control
Microservices Issues: Managing Damage Control
By learning some of the challenges teams can face when shifting from monolithic to microservices architecture, you can be better prepared to overcome them.
Join the DZone community and get the full member experience.Join For Free
As the name implies, microservices are micro-managed to keep applications running uninterrupted, even if any component(s) goes down. The micromanagement is designed to perform through small packages which are deemed to be functionally and technically independent. These packages are loosely interconnected and placed in an application layer. In simpler terms, the microservices packages can be understood as a series of power back-ups working in a way where the failure of a single power back-up will not affect the power supply.
Until now, organizations have not completely adopted microservices. They still rely on monolith (SOA-based) technology to run their applications. Sometimes, due to the heavy load of code, the Integrated Development Environment (IDE) does not perform; consequently, the applications fail to respond and come to a halt. To resolve the issue, the coders have to fix the issue, taking some more time.
Things could turn completely different if monolith technology could be replaced by microservices. Being resilient in nature, the technology never lets application cease, even if a component fails to perform.
What Makes Enterprises Allergic to Microservices?
- Requires complex distribution systems: To ensure uninterrupted instruction flow within the process, it is important to construct a sophisticated distribution system capable of handling token requests between modules. However, developing such system skyrockets the project expenses and consumes more time and resources.
- Onerous Database and Transaction Management: Microservices is the sum of integrated components known to perform special functions with a single system. When several systems perform compositely, a very large database is required to be managed which requires special skills to cater to the need.
- Monitoring Microservices-based Apps: Monitoring of an application requires end-to-end testing to ensure it is smoothly functioning. The monitoring of microservices-based applications is not an easy job, as it involves multiple checkpoints as challenges. For instance, the connectivity of every service to the underlying database needs to be checked prior running a microservices application.
- Microservices Deployment: Deploying microservices entails know-how of automation and skilled resources. Unlike monolithic technology, microservice technology is not WAR-file dependent and needs more attention.
With the right automation tool and an effective team, microservices can be effectively employed in an organization without impacting the good, but definitely sweeping the challenges.
Making a Great Leap While Dodging Challenges
The challenges while deploying microservices architecture and scaling the existing monolithic architecture to microservices, are not inconsiderable. It would be wise to pay attention to the points destined to create havoc in the system.
- Right Architectural Disintegration: To scale up existing monolith architecture into Microservices architecture requires the right disintegration patterns. Uneven disintegration patterns may build malfunctioned components, which may hinder the microservice performance.
- Detaching Data From Components: Decoupling data from application components assists in accessing the data-as-a-service. With such data accessibility, the user can alter the data without affecting the application architecture. This creates another container which can be accessed using data-oriented services, keeping data complexity intact.
- Repackaging the Application: The split architecture can be repackaged with better economic controls. These controls are employed by containers like Dockers, PaaS, and lightweight Java servers like WebSphere Liberty. Repackaging the application is advised to be performed in following steps:
- EAR Splitting: To make the application microservices-oriented, it is important to split the WAR files into different EARs. This requires components to be replicated to perform seamlessly.
- Deploying "CpS": Apply a Container-per-Service pattern and deploy each WAR file into its respective container to function continuously.
- Managing the Application: Once the new architecture is ready down the line, a user can allocate each (required) WAR file into the corresponding container and launch the application.
This article includes most of the challenges, hurdles, and issues that users face while trying to deploy microservices. Technically, it is the upstreaming of monolith-based applications where code refactoring is the biggest challenge. However, seeking the right automation tool, along with some technical know-how, may push you to the new and irresistible realm of microservices.
Though the challenges so far have been resolved, the game is not over yet. There are chances for new hurdles whose resolutions may improve microservices-based applications in a better way. The technology will keep improving as there are many facets of it seeking attention. Many professionals are sure that the technology is capable of overcoming the problem of bloating services keeping microservices' size handy and manageable.
Opinions expressed by DZone contributors are their own.