Sending a file from a server as a request to another server. Seems like a pretty common scenario. If the file is large, I consider it an anti-pattern most of the time, but there are cases when there is no better choice. Especially if the top management in your 'agile' team are just concerned about delivering a product to the client asap without considering the possible issues that would arise from not compressing such huge payloads, let alone allotting developers in the team the time to solve such problems. But this post isn't a rant about how several 'certified' practitioners of agile methods apply the opposite of the patterns they were supposed to have learnt. Without further ado, let's begin. Axios is a popular promise based HTTP client. When sending a file like a pdf as a request to another server which might expect the file in the files array of the request, you will also have to use FormData , which does not have native support in Node.js. Here's a s...
Database is a collection of related data and data is a collection of facts and figures that can be processed to produce information. A database management system stores data in such a way that it becomes easier to retrieve, manipulate, and produce information. A 3-tier architecture separates its tiers from each other based on the complexity of the users and how they use the data present in the database. It is the most widely used architecture to design a DBMS. Database (Data) Tier − At this tier, the database resides along with its query processing languages. We also have the relations that define the data and their constraints at this level. Application (Middle) Tier − At this tier reside the application server and the programs that access the database. For a user, this application tier presents an abstracted view of the database. End-users are unaware of any existence of the database beyond the application. At the other end, the database tier ...
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