People are often unaware that microservices really need to be independent. For example, you often see that all kinds of services are being made but that one database is shared. Another problem is that people program what they were used to doing in a monolith, making the chain of synchronous calls between services (over the network !!!) much too long. Neither is attention paid to spaghetti structure that can arise from all kinds of services that use each other and services are tightly coupled. … [Read more...] about How to avoid turning microservices into distributed spaghetti code
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SOA isn't a new concept -- in fact, sister site TechRepublic has been writing about it since at least 2003, and the definition given back then still applies 17 years later: "In an SOA, the architect attempts to encapsulate the delivery of a specific set of tasks within a single entity that accepts a service request and returns the results of the work performed on its behalf or errors resulting from a failed attempt. The combination of these services, along with guidance on how they can be combined to complete an application, makes up an SOA." … [Read more...] about SOA versus microservices: How are they different?
If you consider the implication of this, what technical folks call an 'abstraction layer', the power of microservices quickly becomes apparent. If the providers of this microservice completely change the hardware, programming language, or physical location of their data center, the user of that service is completely unaffected as long as it continues to return the expected results in the same format. For an internal software application, you no longer have to worry about the painstaking and expensive work of rewriting interfaces and complex connections between systems if they are delivered by microservices. If you have a set of standardized order management microservices, it doesn't matter if your order management infrastructure is on a mainframe running a COBOL application on Monday and a modern ERP system on Tuesday: the microservice should still deliver the same results, and that change will be seamless to any other application that uses that service. … [Read more...] about Microservices 101: A guide to microservice architecture
Identify key IT services that power multiple applications and prioritize them for microservices. A shipping company might start by building order status microservices, just as a retailer might start with inventory services. It may also be tempting to create the 'perfect' microservice for each application, which accommodates every potential scenario and permutation. This approach is a recipe for delayed rollouts and overcomplication. Seek to keep the 'micro' in microservices by making each perform a discrete task. You can always combine multiple services to perform more complex functions, just as you can expand functionality in future versions. … [Read more...] about How to plan a microservices implementation
The structure of the sequel is largely the same as the first game. It takes place in a huge open world — think Grand Theft Auto or Assassin’s Creed — and strings together a series of missions the primarily boil down to sneaking into a location in order to steal some information or take out a bad guy. What makes Watch Dogs unique is its focus on hacking. Thanks to the pervasiveness of smart everything — there’s even a citywide operating system in this world — Marcus can hack just about anything using little more than his phone. And as you progress, you’ll unlock more useful and powerful abilities. Early on you’ll be able to make a guard’s phone buzz to distract them; towards the end you can sic rival gangs on each other so that you don’t have to get your hands dirty. … [Read more...] about Watch Dogs 2 is exactly what the original game should have been