Questions tagged [middleware]
The middleware tag has no usage guidance.
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Creating a generic service comprising another service
Currently I have an existing API for my AI Engine, and a python wrapper to interact with the API. So this wrapper acts like a helper class to help format and automate some of the process that is ...
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Moving Transaction Logic to Middle Layer: Pros and Cons
We have an event booking system that allows patrons to add themselves to a waiting list if an event is fully booked. When somebody cancels, the system moves the first person from the waitlist into a ...
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Middleware responsibilities and usage: checking preconditions for business logic
I am developing an API backend in NestJS, now for some specific routes (or controllers) I am loading in a configuration from the database to handle an incoming request. This fetching of the ...
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Why do we need middleware in FASTapi?
From official documentation:
A "middleware" is a function that works with every request before it is processed by any specific path operation. And also with every response before returning ...
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Modelling Interfaces provided by different IPC frameworks
I'm stuck with a problem, where I don't know how to model interfaces that are provided by different IPC frameworks.
Let's say, there is a camera component and two arbitrary components C1 and C2. The ...
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Middleware with parameters and dependencies
I'm trying to use the middleware pattern to avoid repeating same code over and over again. In my application I work with user data a lot, therefore there are a lot of checks here and there. The ...
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Is it a bad idea to save the database in middleware?
So I've implemented the repository pattern in a lot of projects, but there seems to be a bit of a discussion on what is right with this pattern. Previously, I've always added Update or Create methods ...
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DDD for middleware web application
I am developing a middleware application where the application workflow is:
handles rest requests
performs some business logic
calls another rest service
I would like to use DDD to model the ...
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ESB Services vs Services using Language
Our business domain is complex. Currently, our business is written using ASP.NET WEB API HTTP services. So, applications including web, mobile and desktop are talking with these HTTP apis. Now, one of ...
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Good practices for frontend-backend communication
What are some good practices for handling communication between a frontend and a backend?
From what I know in order to keep things loosely coupled you shouldn't just have your frontend have a ...
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Checking validity of users and tenants in each request
I am designing a centralized IDP to use for a database-per-tenant application that uses a "tid" (Tenant Id) claim in the access token that the WebAPI uses to create a connection string ...
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Best place to map Model got in ActionMethod
I'm not sure this question matches this forum's purpose, but I didn't think it should belong to the stackoverflow one either, so here it goes:
I created a model binder that makes one mapping so "...
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1k
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Sequence diagram: explicitly show websocket creation?
I am trying to draw up a sequence diagram to show how my web client will interact with my backend over a websocket connection.
I am using a websocket middleware to manage the stream connections.
...
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Does "middleware" have two different meanings?
Does "middleware" have two different meanings and therefor is unnecessarily overloaded?
Horizontal: I saw some use middleware to mean something like proxy or gateway
sitting between two entities at ...
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Bidirectional sync between two databases with differing schemas
I'm embarking upon a project where the goal is to create a bidirectional sync mechanism between two database systems with differing schemas. One is a custom CRM app build on MongoDB, the other is ...
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Are distributed file systems and naming services middleware?
From Distributed Systems by Coulours, a distributed system is partitioned into layers
Middleware is defined as
Middleware was defined in Section 1.5.1 as a layer of software whose
purpose is to ...
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958
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Message Broker vs. iPaaS
Does anyone have suggestions/recommendations/guidance they can offer on when to use a message broker like RabbitMQ/Kafka vs. an iPaaS solution like Mulesoft/Jitterbit/Dell Boomi/Workato? Can they ...
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How does the concept of http middleware differ from events?
I've been thinking about the most optimal way to implement middleware in my web application and it got me thinking, how is middleware any different from events?
Let's say that before a controller ...
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Is it a good idea to pass an URL as a parameter for a pass through service?
I'm developing a service in node JS that will act as a middleware for a client calling a third party API.
My service will make some security and user roles checks before calling the third party.
So ...
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In Middleware paradigm, how do you transfer resources from one step to the other?
What would be the right way, according to the Middle-ware paradigm/design pattern to transfer resources (like connections to some IO devices).
It is not part of the Request, and it is definitely not ...
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382
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How to convey object hierarchy when object is converted to json for updates?
I have some classes being serialized via frugal (this is an open source extension of Thrift). The primary reason this is relevant is that the serialization process is out of my control and needs to ...
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SOA with dynamic forms
When building a Service Oriented Architecture (because the services will be used by automated systems or other consumers), how can I go about creating a simple, dynamic form-based web frontend for ...
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Contract decoupling on microservices
I am not trying to launch a Microservices vs SOA debate but I find hard to understand the following statement:
"Microservices architecture does not support contract decoupling, whereas contract
...
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What is a "streaming app", exactly?
I'm trying to get past all the hipster, pie-in-the-sky buzzwording and address a very simple, fundamental question:
What is a streaming application?
According to the Kafka site
"Kafka is used for ...
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Is the word "Dependency" used correctly in DI?
The word "Dependency" is used a lot in programming. But I think we might be using it wrong in many ways. I will use "Dependency Injection" in this post as an example. According to the Dictionary.com, ...
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Advice on using middleware to phase out legacy ERP system
I would like to know if any of you have any experiences and advice you'd like to share about middleware systems?
A little background first: the company I work for is based entirely on a closed ...
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What is the difference between AUTOSAR and DDS?
I am wondering what is the difference between DDS and AUTOSAR. As I know, both of them are communication middlewares. AUTOSAR WAS originally proposed by a group of car manufacturer that's why I guess ...
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How to persist a session cookie in a PSR7 request/response middleware?
I am building a package that implements native-like sessions in a PSR7 middleware architecture.
I created a middleware which is responsible to create and persist a session cookie. The session is also ...
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Best Possible Way To Write Unit Tests For HTTP Middleware
I am using this go library(https://github.com/abourget/goproxy) to create a custom proxy server app. The app is utilizing several middleware of the following form:
MyMiddlewarFunc(ctx *goproxy....
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Are hooks really subsumed by Slim Framework middleware?
I've been using the Slim Framework (v2) for a little while now to develop my user management system.
They recently released Slim 3, and according to the upgrade guide,
Slim v3 no longer has the ...
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How system integration happens with an ESB?
Assume I have two different software sub systems and I need to interconnect them through an Enterprise Service Bus.
What sort of modifications do I need to make in the existing systems to integrate ...
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What is the middleware (if any) in web-service consumed by a website?
I am trying to identify the parts of an architecture.
The server (Python) acts as a web-service, delivering files and data. The client (JS) requests the data which it needs by sending xmlhttprequests ...
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Middleware dependencies
I'm trying to convert a legacy PHP app to use the middleware paradigm, similar to connect/express.js.
I've started porting the code into separate middlewares so that every feature is neatly self ...
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Is CORBA outdated? [closed]
I'm just learning about midleware in class, and our teacher has told us about CORBA. Doing a bit of research, I've found that the last version (CORBA 3) was released in 2002, which seems quite old in ...
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have we come full circle with microservices, back to very old school approaches?
In terms of software architecture and design, how do microservices "stack up" (pun intended) against middleware? I'm coming from Java, and it seems like as you move away from straight REST as an API, ...
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3 tier architecture in .NET web applications
Nowadays most systems are designed as web apps. In the .NET world the famous three tier architecture is usually translated like this.
Front End (Web Application)
Middle Tier (custom DLLs using an ...
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Differences between API Gateways and ESBs? [closed]
The company I work for is evaluating some middleware solutions for governace, metering and security of web services. Currently, we're using an Enterprise Service Bus (ESB) for this purpose, but some ...
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How to Recover from Inconsistent Job State without Database Polling
I'm working on scaling an application which is currently polling a mySQL database to send async jobs to a background processing system.
A state machine is being used to keep track of the entities ...
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Why database as queue so bad? [closed]
I've just read this article, and I'm confused.
Let's imagine 1 webapp and 1 distinct application acting as "worker", both sharing the same database.
Oh, I said "sharing"..but what does the article ...
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What is the middleware pattern?
Here's a Ruby poject that implements the middleware pattern. From the description, I have no idea what the pattern is, what it's useful for, and why other solutions wouldn't work as well.
What is ...
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how to expose certain tables of an internal database on a public site
I have an internal database at my work. At the moment we are using excel to import data, but this is very error prone, so I would like to replace this with some javascript based application which ...
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What is the equivalent of Entity Framework in the world of Oracle shops? [closed]
Within the world of developers/firms specializing in building/deploying solutions built around software built/sold by Oracle (aka "Oracle houses"), what ORM middleware is considered as the "industry ...
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EJB Lifecycle and Relation to WARs
I've been reading up on EJBs (3.x) and believe I understand the basics. This question is a "call for confirmation" that I have interpreted the Java EE docs correctly and that I understand these ...
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What are frameworks, stacks, and middleware?
I often see several terms (such as software stack, framework, and middleware) thrown around a lot, and it would be very helpful for someone to explain the differences between them
I was prompted by ...
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Criteria When Evaluating Middleware
What are some suitable criteria for evaluating a list of Companies complimentary middleware? I am doing a trade study on several Company's middleware implementations and so far I have came up with the ...
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Application vs middleware development in android [closed]
I have 1 year and 6 months of experience on Android. All of my experience has been into application development. Recently I have got offers from two companies. One is offering me a profile to work on ...
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Selling middleware
I am close to completion of a useful suite of tools for 2D game development (with mobile platforms in mind), for working with sprites and animations.
Can anyone advise the best way to sell and ...
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What scenarios are implementations of Object Management Group (OMG) Data Distribution Service best suited for?
I've always been a big fan of asynchronous messaging and pub/sub implementations, but coming from a Java background, I'm most familiar with using JMS based messaging systems, such as JBoss MQ, HornetQ,...
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