and in the case of the online store, add more servers in order to scale it out. These could also just as easily be components of an online Lego store application □.Īll of this is run within a single process, and if our Lego store becomes very popular and we want to expand the business, we will have to add more Lego blocks in the same unit. He can get a shopping cart to carry his purchases, look at products in different aisles, and pay at the checkstand before leaving-essentially, everything he needs is inside the store. Let’s imagine that the person in this image - I’ll call him Jeff - is going inside the store to buy chewing gum and t-shirts. Applications are traditionally “monolithic” which means they are built as a single, autonomous unit -think of your favorite big-box store, selling everything from bananas to lawn furniture.Įverything is contained inside the unit. Let’s think of an application as a store. Microservices are an architectural approach based on building an application as a collection of small services.
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