A traditional monolithic application is the opposite of microservices architecture. It is a single software unit where all the components are interdependent. The database of this architecture serves for the whole stack. The development process is slow, yet simple. In comparison with microservices, monolithic architecture doesn’t require expert knowledge and allows to build the app from scratch.
However, if you aim to launch a complex application with a wide operational system, then microservices will do the work better. Here is why:
|Monolithic architecture||Microservices architecture|
|The whole structure works for all the goals||Each unit accomplishes ONE business goal|
|The disaster affects the whole app||If the fault happens, it only impacts a single unit which is easy to rebuild and redeploy|
|There is only one data model and technology for the structure||Federated data allows choosing the best-suited model for each app process|
|Slow development process||Due to small teams that lead each microservice, the development is quicker and more efficient|
|Unflexible resource allocation||Depending on which service customers use the most (for example, the product listing), developers understand which unit requires more resources|
As you are aware of the microservice benefits, let’s explore some of its drawbacks. Here are some of them:
- Since microservice runs as a complex system, you need to establish communication between all the units, which requires additional effort;
- It is hard to manage and test independently deployable structures;
- The maintenance of each unit requires money and good teamwork;
- Because of the different programming languages, there are more services to look after;
- The processing and storage of unstructured data is a challenge because of the separate mechanisms.