Asynchronous designs trade immediate answers for resilience: a call can be retried until it succeeds, but the sender no longer knows the outcome right away. #Fintech #DistributedSystems

Asynchronous messaging typically runs through a lightweight message broker, such as RabbitMQ or a cloud service bus, that queues messages between producing and consuming services. #Fintech #EventDriven

Asynchronous communication lets a sender transmit a message without waiting for a reply, so it can continue other work immediately. It exists to reduce coupling between distributed services. #Fintech #Messaging

Synchronous calls between fintech services introduce direct runtime coupling: if the receiver is slow or unavailable, the calling service is affected too. #SystemDesign #Fintech

In microservice architectures, single-receiver, request/response calls over HTTP or gRPC are the most common synchronous style, per Microsoft's .NET architecture guidance. #Microservices #Fintech

Synchronous communication means a caller sends a request and blocks until the receiver replies. It exists so a service can get an immediate, ordered answer before it moves to the next step. #Fintech #DistributedSystems

Released a few new NPM fintech SDKs Weavr: www.npmjs.com/package/weav... Xero: www.npmjs.com/package/xero... Treasury Prime: www.npmjs.com/package/trea... Moov: www.npmjs.com/package/moov... #NPM #SDK #OpenSource #FinTech #Weavr #Xero #TreasuryPrime #Moov #Payments #Banking #Openbanking

How is an Anti-Corruption Layer applied during a system migration? It routes calls between a monolith and newly migrated services, converting requests into whichever interface each side expects. #Fintech #Migration #DDD

Why introduce an Anti-Corruption Layer? To isolate two subsystems by placing a translation layer between them, so one system can stay unchanged while the other avoids compromising its own design. #Fintech #DDD #Architecture

An Anti-Corruption Layer implements a facade or adapter between subsystems that don't share the same semantics, translating requests from one subsystem to the other. #Fintech #AntiCorruptionLayer #DDD

Released a few new Go SDKs for fintech. Worldpay: pkg.go.dev/github.com/i... Moov: pkg.go.dev/github.com/f... Starling Bank: pkg.go.dev/github.com/i... Weavr: pkg.go.dev/github.com/i... Xero: pkg.go.dev/github.com/i... Treasury Prime: pkg.go.dev/github.com/i... Mercury: pkg.go.dev/github.com/i...

How does a Strangler Fig migration typically begin? By identifying the boundaries of the existing system to be replaced, whether that is an entire application or a smaller subsystem within one. #Fintech #StranglerFig #Architecture

Why use the Strangler Fig pattern? It reduces the risk of a full cut-over rewrite of a critical system, letting a legacy application keep running while functionality migrates piece by piece. #Fintech #StranglerFig #Migration

The Strangler Fig pattern, coined by Martin Fowler, incrementally replaces specific pieces of a legacy system with new services while customers keep using the same interface. #Fintech #LegacyModernization #StranglerFig

Why decompose by subdomain instead of by business capability? Both patterns address the same underlying problem: how to define correct, loosely coupled service boundaries in a complex application. #Fintech #DDD #Microservices

Domain-driven design rejects a single unified model for an entire system. It instead divides a system into bounded contexts, each holding its own domain model tied to a specific subdomain. #Fintech #DDD #DistributedSystems

Decompose by subdomain is a microservices pattern that defines services corresponding to domain-driven design subdomains rather than business capabilities. #Fintech #DDD #Microservices

A business capability refers to a business activity aimed at generating value, for example order management or customer management, and each can map to its own microservice. #Fintech #Microservices #BusinessCapability

Applying decompose by business capability requires enough insight into an organization's business units, typically drawing on subject matter experts for each unit. #Fintech #Microservices #Architecture

Decompose by business capability is a microservices pattern that defines services corresponding to what a business does to generate value, such as payments, accounts, or customer service. #Fintech #Microservices #BusinessCapability

How are microservice boundaries identified? One documented approach starts with a bounded context, then examines the aggregates inside it, since aggregates often make good candidates for individual services. #Fintech #Microservices #DDD

Why do service boundaries matter in distributed fintech systems? Poorly drawn boundaries create tight coupling, forcing teams to coordinate changes across services instead of deploying independently. #Fintech #DistributedSystems #Architecture

A service boundary marks where one service's responsibility ends and another begins. Each microservice is self-contained and implements a single business capability within a bounded context, a natural division within a business domain. #Fintech #Microservices #DDD

How is an Anti-Corruption Layer applied during a system migration? It routes calls between a monolith and newly migrated services, converting requests into whichever interface each side expects. #Fintech #Migration #DDD

Why introduce an Anti-Corruption Layer? To isolate two subsystems by placing a translation layer between them, so one system can stay unchanged while the other avoids compromising its own design. #Fintech #DDD #Architecture

An Anti-Corruption Layer implements a facade or adapter between subsystems that don't share the same semantics, translating requests from one subsystem to the other. #Fintech #AntiCorruptionLayer #DDD

How does a Strangler Fig migration typically begin? By identifying the boundaries of the existing system to be replaced, whether that is an entire application or a smaller subsystem within one. #Fintech #StranglerFig #Architecture

Why use the Strangler Fig pattern? It reduces the risk of a full cut-over rewrite of a critical system, letting a legacy application keep running while functionality migrates piece by piece. #Fintech #StranglerFig #Migration

The Strangler Fig pattern, coined by Martin Fowler, incrementally replaces specific pieces of a legacy system with new services while customers keep using the same interface. #Fintech #LegacyModernization #StranglerFig

Released 4 new open-source Elixir SDKs for fintech platforms! 🚀 • Starling Bank – https://hex.pm/packages/starling_bank • Moov – https://hex.pm/packages/moov • SumUp – https://github.com/iamkanishka/sumup • Unit – https://github.com/iamkanishka/unit #Elixir #OpenSource #FinTech #Banking