The worst WTF garbage software I have seen in my 30+ years career is an old micro-services system maintained by a team at work.
It uses more than 100 micro-services to implement a system that would have been so much simpler if implemented as a monolith. With hundreds of scripts to try and manage the complexity. With frequent timing bugs (a single micro-service delay causing a cascade of timed out micro-services bringing the system down) and almost impossible to fix complex error scenarios that will make experienced developer heads spin.
In contrast, the systems I work on are million+ lines C/C++ monoliths that are orders of magnitudes simpler to maintain. With orders of magnitude fewer bugs in production. All implemented as a collection of well designed libraries.
IMHO the moment you split a monolith into 100+ micro-services, the number of failure scenarios dramatically increase because of the added complexity of message exchanges, message failures, queuing delays, circular dependencies etc.
In other words, if you don’t even have the skills to implement a monolith successfully, then stay the hell away from micro-services.
It uses more than 100 micro-services to implement a system that would have been so much simpler if implemented as a monolith. With hundreds of scripts to try and manage the complexity. With frequent timing bugs (a single micro-service delay causing a cascade of timed out micro-services bringing the system down) and almost impossible to fix complex error scenarios that will make experienced developer heads spin.
In contrast, the systems I work on are million+ lines C/C++ monoliths that are orders of magnitudes simpler to maintain. With orders of magnitude fewer bugs in production. All implemented as a collection of well designed libraries.
IMHO the moment you split a monolith into 100+ micro-services, the number of failure scenarios dramatically increase because of the added complexity of message exchanges, message failures, queuing delays, circular dependencies etc.
In other words, if you don’t even have the skills to implement a monolith successfully, then stay the hell away from micro-services.