Questions tagged [microservices]
Microservices are small, independent processes that communicate with each other to form complex applications which utilize language-agnostic APIs. These services are small building blocks, highly decoupled and focused on doing a small task, facilitating a modular approach to system-building.
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How Does Maintaining Service Level Agreements and Operational Uptime Work in Bigger Companies? [closed]
For context, I am working as a machine learning engineer in a mid size company. Although the company itself is quite big, it is not a new age tech company, and my team is one of the few that really ...
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Separation of Students and Users in NestJS Microservice architecture
I need help with the architecture pattern I should use in a NestJS project.
So I am using a command/query approach for developing my RestAPIs. Right now it's a Monolith and not a microservice ...
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How to avoid circular dependency in my scenario?
For example, I have a Business Intelligence (BI) microservice, it reads data from other microservices, and displays the data as a bar chart or some other styles.
My problem is, the BI microservice ...
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What's the right ZMQ architecture for my scenario?
I have a service A that every once in a while needs to send a message to a cluster of services B1, B2 ... BN.
Then all of these services need to receive that message reliably, and send a confirmation ...
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micro-service bounded context applies to infrastructure?
My team own two micro-services, both hosted on AWS ECS. One service uses aws redis. For second service we need to implement lock mechanism for one endpoint. For that we need to store single key in ...
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How to design permission-based authorization for individual resources for individual users?
I need to design a system that handles multiple types of resources, each having their own business logic and different types of actions available for those resources. The requirements are a natural ...
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Resolving ids to a service in a service oriented architecture
Given a service oriented architecture, for example in a blog system let's say we have services for User, Post, and Comments.
A new requirement comes that a User should be able to "Like" any ...
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Events data ownership in microservices
Imagin I have two microservices that need to send email to a customer about some important account realted things that happened.
For example, Billing service would like to send an email when a card ...
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Batch Processing to use multiple pods
We have a frontend application in React and a backend application in .NET Core which were deployed in a single Kubernetes cluster of 3 pods (it can autoscale). Before the application, we have a load ...
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How to implement event payload isolation in an event driven architecture?
I have an event, let's say order.placed The payload consists of some general information about the order and 3 confidential fields. For example part of the message should only be visible to consumer A,...
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Is turning objects that perform infite loops into a services a good practice?
I was assigned a task to change the communication mechanism between two parties, from Azure Event Hub to Azure Queue + Blob Storage.
On the way, I thought redesigning a bit the components to make it ...
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App that can be deployed both as monolith and microservices?
We have a monolith C++ application and I consider doing some major refactorings. Since we're not completely ready to go full "microservices only" (maybe in about two years time), I want to ...
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Monolithic Database to Microservices, but with Radical Data Model Changes
We are finishing up a long (over 1 year) project to retire our monolith. We have been moving pieces of functionality into microservices guided by domain driven design.
So far we have been leaving the ...
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Microservices - how to implement search combined with security cross cutting concern?
I am trying to design a system and bounded contexts.
I have 3 microservices: Security, ProductsCatalog and Customers.
Each microservice own its database.
Security is a cross cutting concern used in ...
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Best way to orchestrate/choreogaph steps in a pipeline where each step is executed by a separate microservice and may need to scale independently?
Update: Forget the 'best' way, any way to start with is good enough. I am new to this and figuring it out all by myself is taking too long. I don't even know where to start.
I am new to this and ...
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Many-to-many modeling for microservices
I have two microservices, say "students" and "courses", they represent separate entities that are managed separately by different teams.
A given student can be enrolled in multiple ...
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Microservices: separate db instance vs. separate db server
In a scenario with multiple teams, each overseeing a few microservices that collectively create a larger system, and where these services frequently use MongoDB databases, is it advisable for each ...
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Bean Custom Constraint Validator in multiple projects which common domain model
I have multiple maven projects ( rest services ) with common domain model. I would not say micro services. Structure is build this way to eventually move towards mircoservices.
All the maven projects ...
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How to effectively scale one microservice to multiple instances
Let’s say I have a booking microservice (single instance) with its own DB.
If I want to horizontally scale the service with multiple instances(exact same copy of the business logic code) running on ...
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How does a Bounded Context from DDD help scaling microservices?
New to the microservices architecture - but what I've picked up so far doing some research while designing a microservices architecture for a home rental system is these:
Individual microservice ...
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When would you consider sharing a database to be fine? What are your rules?
When would you consider sharing a database to be fine? What are your rules?
Our team in-charge of in-store credits.
We:
Calculate how much credit the customer earned
Keep track of how much credit the ...
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Child Entity or Aggregate Root?
I have to design a part of a system in responsible for creating tickets for attractions and then sell them. Basically there are
three different parts:
Product: to create the tickets for sale for each ...
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Is service discovery an anti-pattern?
We deploy microservices in Kubernetes environment.
For providing a solution to a business use-case using microservices,
Is the idea of service registration and service discovery not an anti pattern? ...
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E2E tests and fan in build pipeline
In chapter 9 (Testing) of the book Building microservices (2nd edition)
Author suggests using a Fan-in approach to have a single shared E2E tests for all microservices. This way tests of unchanged ...
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Microservices architecture for spring boot application
I have a Spring Boot application which is containerized. The application has become huge with lots of complications and its difficult to maintain it. So I am thinking of breaking it into microservices....
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How to provide user id to proxied services in an API gateway pattern?
I'm making code examples of how to start a modern microservices web architecture from scratch, and I only recently learned about API gateway pattern. So far, the authentication methods I used for ...
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Architecture Design using Queue and JWT Token for session management
I am planning to design a microservice system architecture for a ticketing platform. It will be similar to "TicketMaster". Here is the flow of my architecture:
client web browser
API ...
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Exposing DB table to other Microservice via a Library
Consider I have 4 Services .
Account
Order
Items
Customer
Now a External Partner Service calls all these services , by passing an External customer id ( EXT_CUST_ID) in the request.
Our platform has ...
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Access Token Or Alternative for Microservices For Resource Level Granular Checks
Hi I have following structure :
Client App (layer 1)
Business logic Services ( Layer 2)
Business Logic layer consists of many microservices . Access token can be created and passed from APP layer to ...
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Clean Architecture with Microservices
I'm fairly new at system architecting and I'm looking for some advice. My company is revamping its order management system. Currently is a monolith system that scales very poorly and is difficult for ...
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Can chatty microservices be okay to use if there is a specific use case for them?
Introduction
Hi everyone,
in my company we are using microservice approach and of course are trying to do it as correct as possible. There is a new requirement coming up where I have laid out a ...
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How to build REST uri that fetches children by parent ID
I am building 2 REST microservices: ParentService and ChildService. I need to build endpoint to fetch all Child resources related to specific Parent, so I have these URI's as options:
GET /parent/{...
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Microservices messaging and coupling [duplicate]
So I am designing some microservices that communicate via messaging and event queues.
However, if I update a message class, for example remove a field, this will break several participating ...
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Designing a microservice architecture
I am looking to enhance my skills in back-end technologies and would need your help in setting up a scalable microservices architecture.
Here's my project.
I have N sensors that send me data (Pressure,...
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Can multiple producers cause events with the same key to be enqueued out of order within a specific partition of a topic?
I'm aiming to create a simple event-driven system where each microservice operates with its own database. The idea is to share database changes across microservices through events. To ensure proper ...
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Centralize input validation across multiple Microservices
My company, which specializes in logistics and transportation, delegated the majority of the backend microservices to our team. All of the microservices (which our team inherited from "past ...
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Using a single Postgres server process to manage multiple databases in a microservice application
One of the main guidelines I keep seeing for successfully building a microservice application is to use a separate database for each microservice. In diagrams these are usually depicted as physically ...
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When should we separate common parts of multiple services into one separated service
We have some services (consider 10, some of them already exist and some are yet to come). All of these services have a common part where they keep track of what's being changed, and these so-called &...
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Can the Enterprise Service Bus in SOA be replaced by multiple service bus implementations and still be SOA?
When and Service Oriented Architecture (SOA) is designed, and the ESB is changed to multiple independent service busses that talk to each other (pub/sub), does the architecture cease to be SOA? Is it ...
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Using messaging and rest to communicate services at the same time
I have two microservices, USERS and PRODUCTS, the second one creates objects referred to first one so it needs first to check that exists
First I though in a redis cache, but then I realize that for ...
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JWT Cookie and API Gateway
Background
I have an authentication microservice that handles the user authentication and returns 2 JWT cookies (access_token and refresh_token).
I want to incorporate an API gateway that does the JWS ...
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Why do Streamlit applications often consume a FastAPI backend?
I am fond of writing Streamlit applications (when a front-end is needed) and fastAPI backends when I just need a REST API.
I've seen many blog posts where these two are combined - with the Streamlit ...
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Single api gateway or one for each microservice
We are going to have multiple microservices and decided to use api gateway. What we couldn't decide is if we should go for a single gateway for all of them or one for each. The reason why one for each ...
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How to write custom implementation of a service/flow for a tenant in a multi-tenant microservice system?
I have a Java Spring boot microservice in production which supports multi-tenancy and the tenants are isolated at database level. This microservice exposes REST APIs for communication. During a ...
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Does it make sense to create a new service to house multiple features that are related business-wise but tech-wise independent?
We are beginning to add third-party integrations that all have to do with a certain business concept. (If it helps to make things concrete, in our case it's "measurements," i.e. third-party ...
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How do you handle using same data in different microservices
We have a microservices application and our User management service is the source of truth for user's first and last name. But we also need these in the Reporting service, where we generate reports ...
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Which comes first: CD/Trunk-based development or microservices?
My company* wants
to move from using long-running feature branching (~up to a few weeks) to continuous integration with trunk-based development, and
to break up our monolith into microservices.
We'...
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Using a shared enum across 15 nanoservices [closed]
Originally posted here, moved to code review, redirected from code review back here as there is no code to review. I think the question is enough abstract to be asked here.
I have a mono repo with ...
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Microservice Web app - How will I handle User Login in my project management app
I've just started learning to use this architecture and I'm trying to build a simple project management app. The App works such that a user after registering, creates a workspace. This Workspace is ...
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Domain Boundary Definition in `proximity service` as a Case Study
While practicing System Design, I decided to create a hypothetical proximity service (like Google Maps) with a microservice architecture. Suppose we have 3 core categories of functionality:
CRUD ...
