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    API Gateway and Service Mesh in the context of service connectivity

    23.2.2021 | 1 minutes of reading time

    When thinking about the development of microservices and their connectivity, one inevitably stumbles across the terms / patterns of API gateway and service mesh. But why do these patterns or technologies exist at all? Sometimes it also happens that the patterns are mixed up with each other in terms of content, because a deeper understanding of the application of the patterns is missing and a tutorial is not necessarily the best basis. To begin with, it is important to take a look at the OSI network layer model. This model is the basis for all subsequent considerations.

    OSI network layer model

    The model describes the relevant network protocols in the form of layers as a reference. Throughout this blog post, we will return to this model again and again. The API gateway has yet been described in detail in various blogposts, but here we will summarise the most important points for a possible comparison with a service mesh.

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    Blog authors

    Daniel Kocot

    Senior Solution Architect / Head of API Consulting

    Do you still have questions? Just send me a message.

    Dennis Effing

    IT Consultant / Software Engineer

    Do you still have questions? Just send me a message.

    Do you still have questions? Just send me a message.

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    fromDaniel Kocot & Dennis Effing

    Charge your APIs Volume 36 - Trends for 2025

    As 2025 approaches, new trends are emerging in the world of APIs. After 2024 was user-centric, the focus is now shifting back to developer needs and increasing productivity. APIs are evolving and the technologies surrounding them are becoming more powerful...

    • Integration
    • API
    • Data
    • Software architecture

    11.12.2024 | 5 Minuten Lesezeit

    Charge your APIs Volume 35 - Going Beyond OpenAPI: Using API Value Proposition...

    APIs have become the backbone of modern digital transformation, connecting systems, automating processes, and enabling innovative customer experiences. However, their potential often remains underutilised due to a persistent gap between technical descriptions...

    • API

    20.11.2024 | 6 Minuten Lesezeit

    Charge your APIs Volume 34 - From Christian Posta’s Omni-Directional API...

    As companies expand their digital ecosystems with APIs at the core, managing these interfaces with flexibility and governance has become essential. Traditional centralised API management models struggle to keep pace with decentralised, microservices-...

    • API

    13.11.2024 | 6 Minuten Lesezeit

    Charge your APIs Volume 30 - Gateway to Success: Understanding and Choosing...

    API gateways are essential for managing and securing data flow between services. As software architectures evolve, different types of API gateways have emerged to address specific challenges: Legacy, Agnostic, and Kubernetes-native. Drawing on insights...

    • API
    • Software architecture
    • Infrastructure
    • Integration

    21.8.2024 | 12 Minuten Lesezeit

    Charge your APIs Volume 28: Empowering application and data integration...

    In today's fast-paced world, seamless application and data integration is crucial for organisational success. This blog explores how frameworks like Maslow's Pyramid, Team Topologies, Evolutionary Architectures, API Federation, and API Marketplaces, ...

    • API
    • Data
    • Integration

    25.7.2024 | 7 Minuten Lesezeit

    Data for the Masses Volume 2: Data Products, Data Contracts and API Contracts

    The pillars of modern data architectures as success factors for organisations In the digital economy, a well-thought-out data architecture and the efficient use of data are crucial for organisational success. Data products, data contracts and API contracts...

    • Data
    • API

    13.6.2024 | 7 Minuten Lesezeit

    Charge your APIs Volume 27: Transition from COE/C4E to an API Platform...

    The Center of Excellence (COE) focuses on centralised expertise, ensuring best practices and governance, while the Center for Enablement (C4E) empowers teams with tools, guidance, and support for API development. Although beneficial, these models face...

    • API
    • Platform engineering
    • Agile transformation
    • Agile

    24.5.2024 | 10 Minuten Lesezeit

    Charge your APIs Volume 26: Choosing the Right API Development Strategy...

    In today's digital world, Application Programming Interfaces (APIs) are crucial for creating flexible and scalable software. The way APIs are designed and implemented, particularly through API Design First and Code First approaches, plays a vital role...

    • API

    16.4.2024 | 6 Minuten Lesezeit

    Charge your APIs Volume 24: Harmonizing API Strategy and Team Dynamics...

    In the evolving digital landscape, agility and innovation are critical, highlighting the strategic importance of APIs. Organisations looking to enhance their digital presence and streamline operations rely on APIs as key components of modern software...

    • API

    20.3.2024 | 8 Minuten Lesezeit

    Charge your APIs Volume 22: Mastering the Art of API Federation

    API Federation is becoming essential in modern API management, addressing the complexities of evolving digital enterprises. It marks a shift from centralised, monolithic management to a dynamic, modular framework. Unlike traditional methods, API Federation...

    • API
    • Cloud
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    7.2.2024 | 11 Minuten Lesezeit

    Data for the Masses Volume 1: The Digital Product Passport - A Key Element...

    The Digital Product Passport represents a significant shift for digital units within organisations, compelling them to ensure comprehensive data transparency. This tool not only serves as a product's digital fingerprint but also opens up new dimensions...

    • Data
    • Product management

    25.1.2024 | 7 Minuten Lesezeit

    Charge your APIs Volume 21: Introduction to OpenTelemetry in the Context...

    In the swiftly changing landscape of digital technologies, the significance of Application Programming Interfaces (APIs) has become increasingly paramount. Serving as the channels through which various software systems communicate and exchange data, ...

    • API
    • Observability

    9.1.2024 | 15 Minuten Lesezeit

    Charge your APIs Volume 20: Navigating the OpenAPI Initiative Workflows...

    In the ever-changing world of API development, the OpenAPI Initiative stands as a beacon of standardisation and best practices. This collaborative and open-source project, under the auspices of the Linux Foundation, has been instrumental in establishing...

    • API

    14.12.2023 | 12 Minuten Lesezeit

    Charge your APIs Volume 19: Understanding Problem Details for HTTP APIs...

    In today's ever-changing web development landscape, HTTP APIs have become indispensable, powering a myriad of applications and services across the internet. They act as the vital communication backbone, enabling smooth data exchanges between different...

    • API
    • Resilience

    30.11.2023 | 15 Minuten Lesezeit

    Charge your APIs Volume 18: Unleashing the Power of APIs - From Interfaces...

    In this series, I usually delve into fresh ideas and concepts, also weaving connections between them. Yet, have you ever pondered over what API means within your organisation? Through our enablement projects, we constantly explore this alongside our ...

    • API
    • Product management

    26.10.2023 | 3 Minuten Lesezeit

    Charge your APIs: NordicAPIs Platform Summit Edition - API first ... not...

    In the ever-evolving landscape of software development, buzzwords and paradigms come and go. One such term that has gained significant traction in recent years is "API-First Development." It's been hailed as the holy grail of modern software engineering...

    • API
    • Data

    19.10.2023 | 5 Minuten Lesezeit

    Charge your APIs Volume 17: Using Protobuf for Defining gRPC Services ...

    Welcome back on how to create stable and efficient service definitions using Protobuf. In the first part of this series, we provided an overview of Protobuf and its benefits for defining gRPC services. Today, we will dive deeper into this powerful tool...

    • API

    12.10.2023 | 7 Minuten Lesezeit

    Charge your APIs Volume 16: Using Protobuf for Defining gRPC Services ...

    In the world of distributed systems and microservices, the way services talk to each other has come a long way. REST, which is based on the HTTP protocol and follows the CRUD (Create, Read, Update, Delete) operations model, has been the go-to standard...

    • API

    4.10.2023 | 7 Minuten Lesezeit

    Charge your APIs apidays Edition: Unlocking Collaboration with Internal...

    By the time you're reading this article, a discussion on this topic will already have taken place at apidays in London. Through this piece, I aim to encapsulate that discussion and elaborate on the core arguments, which isn't readily achievable just ...

    • API

    14.9.2023 | 5 Minuten Lesezeit

    Charge your APIs Volume 15: API Gateways - Navigating the Agony of Choice...

    In the dynamic world of APIs, our previous exploration into API Managment and APIOps shed light on the intricacies of managing and streamlining API operations. As we delve deeper into this realm, another critical component emerges at the forefront: API...

    • API
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    7.9.2023 | 7 Minuten Lesezeit

    Charge your APIs Volume 14: Is API Management Really Dead? Understanding...

    In the ever-evolving world of technology, debates and discussions are a constant. One such debate that has been making waves on social media platforms for the past few months is the purported "death" of API Management. As with most debates of this nature...

    • API

    31.8.2023 | 7 Minuten Lesezeit

    Charge your APIs Volume 13: Data meets APIOps

    In the swirling digital vortex that modern businesses navigate, two things stand clear as day: our escalating reliance on Application Programming Interfaces (APIs) and the immeasurable value of data. The API Operations (APIOps) pipeline, with its automated...

    • API
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    24.8.2023 | 10 Minuten Lesezeit

    Charge your APIs Volume 12: Fern - Streamlining REST API Development �...

    In our previous blog posts, we delved into the world of API description languages, exploring TypeSpec and Taxi language. Thanks to my colleague Ralf Westbrock today we're turning our attention to Fern, a toolkit designed to streamline the process of ...

    • API

    9.8.2023 | 4 Minuten Lesezeit

    Charge your APIs Volume 11: Taxi Language - Building APIs with Precision...

    In the last blog post before the summer holidays, we explored the world of API description using TypeSpec. Today, we're shifting gears to another powerful tool in the API landscape - the Taxi language. We'll delve into its relevance in building APIs,...

    • API

    2.8.2023 | 4 Minuten Lesezeit

    Charge your APIs Volume 10: Crafting API Definitions with TypeSpec

    As we approach the summer holiday, I thought of wrapping up the series o with a deep dive into the crafting of API definitions with a example for retail domains. We'll explore the powerful capabilities of Microsoft TypeSpec and its transformation to ...

    • API

    12.7.2023 | 4 Minuten Lesezeit

    Charge your APIs Volume 9: Perfecting APIOps - API Monitoring with Checkly

    Over the past series of blog posts, we've been exploring the fascinating world of API Operations (APIOps), diving deep into Continuous Integration, Continuous Deployment, load testing, API diffing, and API Portals and Marketplaces. We've built a robust...

    • GitHub
    • API
    • CI/CD

    5.7.2023 | 3 Minuten Lesezeit

    Charge your APIs Volume 8: Expanding APIOps - API Portals and Marketplaces

    In our previous blog posts, we've taken an exciting journey through the world of API Operations (APIOps), exploring concepts like Continuous Integration, Continuous Deployment, load testing with k6, and API diffing with Tufin/oasdiff. By integrating ...

    • GitHub
    • API
    • CI/CD

    28.6.2023 | 2 Minuten Lesezeit

    Charge your APIs Volume 7: Enhancing APIOps - API Diffing with Tufin/oasdiff

    Throughout our exploration of API Operations (APIOps), we've covered a range of concepts - from Continuous Integration and Deployment to API testing under stress. These pillars of APIOps have brought us invaluable insights, helping to streamline our ...

    • API
    • GitHub
    • CI/CD

    21.6.2023 | 2 Minuten Lesezeit

    Charge your APIs Volume 6: Perfecting Your APIOps - Harnessing the Power...

    Our journey through the expansive landscape of API Operations (APIOps) has led us through various territories. We've delved into Continuous Integration and Deployment, ensuring seamless transitions from coding to production-ready APIs with minimal friction...

    • API
    • Testing
    • GitHub

    14.6.2023 | 2 Minuten Lesezeit

    Charge your APIs Volume 5: Taking APIOps with Continuous Deployment to...

    In our previous exploration of API Operations (APIOps), we navigated the landscape of "Streamlining your API Operations with Continuous Integration", delving into how this practice can refine our approach towards API development and management. We examined...

    • CI/CD
    • API
    • GitHub

    7.6.2023 | 3 Minuten Lesezeit

    Charge your APIs Volume 4: Streamlining API Operations with Continuous...

    API operations refer to the maintenance and management of APIs (Application Programming Interfaces) throughout their lifecycle. This includes everything from design and development to testing, deployment, and ongoing maintenance. Continuous Integration...

    • Testing
    • API

    31.5.2023 | 6 Minuten Lesezeit

    Charge your APIs Volume 3: Optimizing API Testing with Contract Testing

    API testing is a crucial part of the development process that ensures the functionality, reliability, and performance of the API. Testing helps to identify and resolve errors early on, which translates into reduced development costs and improved customer...

    • API
    • Testing

    24.5.2023 | 5 Minuten Lesezeit

    Charge your APIs Volume 2 - Guide your teams to achieve value-adding APIs

    Guidelines are essential in every aspect of life, be it in our personal or professional lives. Guidelines are created by conscious decisions made by individuals or a group of people who understand the importance of consistency, structure, and organisation...

    • API
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    17.5.2023 | 16 Minuten Lesezeit

    Charge your APIs Volume 1 - Build a documentation system with mkdocs

    Following last week's launch of a new series of articles on LinkedIn, there is now a refresh under a new name on the codecentric blog. Why "Charge your APIs"? Quite simply, we all need to think APIs further and not just see them as a vehicle for integration...

    • API
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    10.5.2023 | 5 Minuten Lesezeit

    „Platform Engineering ist eine Art von Knowledge Sharing“

    Warum „Platform Engineering“ eigentlich der falsche Begriff ist und wie man den Golden Path findet, erklärt Daniel Kocot, Senior Solution Architect, im folgenden Interview. Marco Paga: Warum ist Platform Engineering interessant? Daniel Kocot: Ich habe...

    • Softwareentwicklung
    • Accelerate
    • CI/CD
    • DevOps
    • Platform Engineering

    20.2.2023 | 11 Minuten Lesezeit

    Daniel Kocot

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    The state of APIOps and the deployment of API definitions

    Having learned in one of my posts on Medium that API design is not really an easy task and involves a lot of work, also mentioned in my last post here on the blog, I'm going to move on to another complicated area of APIs, APIOps and, in more detail, ...

    • API
    • CI/CD
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    12.10.2022 | 6 Minuten Lesezeit

    API architecture – The path towards evolutionary architectures

    So far, I've focused on the API design phase in posts and articles published. But a well elaborated API design is only one building block for a balanced API experience in terms of API consumers. Architecture topics represent another important building...

    • API
    • Software architecture

    5.10.2022 | 4 Minuten Lesezeit

    API consumers – between search and feedback

    Approaches for API consumers “We do know our consumers. We know exactly what they want.” Very often I hear these two sentences at the beginning or in the middle of projects. But who is a consumer of an API or a digital product in the fist place? This...

    • API
    • Software development

    19.9.2022 | 9 Minuten Lesezeit

    Platform Engineering – A primer

    Currently, platform engineering is a topic that is causing a lot of reactions in the vastness of the World Wide Web. Especially for customers from the enterprise environment, it leads to interesting side effects when DevOps teams suddenly turn into Platform...

    • Accelerate
    • CI/CD
    • DevOps

    12.9.2022 | 5 Minuten Lesezeit

    API Experience – How API products get ready for digital markets

    We are all confronted with APIs in our everyday actions. But what do APIs mean for each and every one of us? Are they a vehicle for integration projects, as part of an ETL (Extract, Transform, Load) journey? Or are we talking about APIs in terms of digital...

    • API

    1.6.2022 | 17 Minuten Lesezeit

    AsyncAPI specification updates

    Almost six months have passed since my introductory post about AsyncAPI , which is already an eternity in our fast-moving IT world. 😉 Shortly after publishing said post, more precisely in September last year, version 2.2.0 of the specification was released...

    • API
    • JavaScript

    23.2.2022 | 6 Minuten Lesezeit

    From specification to infrastructure – automated API deployments

    Deploying an API into the various stages of a software development pipeline involves not only the aspect of writing (designing) an API specification, but also having or simultaneously deploying a corresponding infrastructure. This article describes possible...

    • AWS
    • CI/CD
    • Infrastructure
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    27.1.2022 | 11 Minuten Lesezeit

    Getting project documentation done with Azure DevOps – Diagrams with PlantUML

    In our projects we rely on documentation, even if many people still assume that because of the Agile Manifesto documentation is no longer needed ;). As far as tooling (in terms of documentation) is concerned, we very often use Confluence in projects...

    • Documentation

    22.12.2021 | 4 Minuten Lesezeit

    AsyncAPI – Documentation of event- and message-driven architectures

    Most applications today are distributed and loosely coupled – which in turn means that the architecture consists of many self-contained components that may be maintained by different teams. The information that is exchanged between components should ...

    • JavaScript
    • API

    26.9.2021 | 8 Minuten Lesezeit

    API-first-Services mit Spring Boot

    In verschiedenen Posts bin ich auf das Paradigma API first eingegangen. Im letzten Post habe ich API first in Gänze betrachtet. Nun möchte ich in der Rolle eines API Producers versuchen, einen Service mit der Idee von API first in die Praxis umzusetzen...

    • API
    • Spring

    28.7.2021 | 5 Minuten Lesezeit

    Daniel Kocot

    API first in allen Facetten

    In den vorangegangenen Posts taucht immer wieder der Begriff API first und wurde immer dem „Anlass“ entsprechend verwendet. In Vorbereitung auf andere neue Posts bemerkte ich, dass es nun an der Zeit ist, den Begriff in all seinen Facetten zu betrachten...

    • API

    20.7.2021 | 6 Minuten Lesezeit

    Daniel Kocot

    API first – now even faster!

    In my last post on APIOps , I looked at API first as a strategy for designing APIs. But how can APIs created in this way be found and standardized? And how can they be made usable and secure? In this article, I would like to take a deeper look at the...

    • API

    14.6.2021 | 4 Minuten Lesezeit

    PDF-Generierung aus dem Container – speedata Publisher

    Nach fast fünf Jahren bei codecentric ist es nun endlich so weit, dass ich auf meine Zeit vor codecentric zurückblicke und ein Thema betrachten möchte, das immer noch viele Menschen im Rahmen von Softwareentwicklungsprojekten bewegt: die Generierung ...

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    9.3.2021 | 7 Minuten Lesezeit

    Daniel Kocot

    APIOps – Automated processes for even better APIs

    In my German Softwerker article (Vol. 14, p. 90) , I already dealt with the continuous design and development cycle of APIs. This was mainly about basic assumptions and tooling, including the introduction of API gateways or platforms into existing development...

    • DevOps
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    28.1.2021 | 8 Minuten Lesezeit

    Offloading and more from Reedelk Data Integration Services through Kong...

    The last post in our series on Reedelk was about implementing an ETL process that can be triggered by a rest endpoint. Now this service should be made available to the “outside world” in a secured way. But how can services in modernization projects be...

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    20.9.2020 | 6 Minuten Lesezeit

    Creating integration flows with the Reedelk Data Integration Platform

    The integration of data from systems of record or legacy systems is one of the elements of a software development project that does not start on a greenfield. In other words, it can help modernize software. Usually the question arises how to transfer...

    • Agile transformation
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    3.9.2020 | 8 Minuten Lesezeit

    Kong Enterprise – Die Service Control Platform

    Die bisherigen Blogposts zu Kong aus dem vergangenen Jahr haben sich dem API Gateway beschäftigt, welches als Open-Source-Produkt zur Verfügung gestellt wird. Seit Ende September / Anfang Oktober 2019 ist codecentric Go-To-Market-Partner in EMEA, vor...

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    28.5.2020 | 3 Minuten Lesezeit

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    Kong API-Gateway – Observability mit Prometheus, Grafana und OpsGenie

    Im vorherigen Blogpost habe ich das bestehende Demo-Setup um decK und Konga erweitert. Nun soll es darum gehen, die vorhandenen Daten der APIs sichtbarer werden zu lassen. Hierzu möchte ich zwei Observability Patterns, nämlich Monitoring und Alerting...

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    19.12.2019 | 4 Minuten Lesezeit

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    Kong API Gateway – Deklarative Konfiguration mit decK und Visualisierung...

    Seit dem letzten Post ist eine neue Version (1.4 ) des Kong API Gateways veröffentlicht worden. Die größte Neuerung stellt die /status-Route dar. Über diese lässt sich der Status eines Gateways direkt abfragen. Anfang Dezember ist auch ein Patch-Release...

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    12.12.2019 | 4 Minuten Lesezeit

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    API-Management mit Kong – Ein Update und mehr

    Seit dem letzten Blogpost zu diesem Thema von Alexander Melnyk sind fast zwei Jahre vergangen, und es ist in Sachen „API-Management mit Kong“ eine Menge passiert. Daher war es an der Zeit, zum einen die Inhalte des Posts von Alexander zu aktualisieren...

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    3.9.2019 | 5 Minuten Lesezeit

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    API as a Product insights

    For quite some time now, the topic “API as a Product” has been appearing in various media. But what does it actually mean? If you look at APIs, the focus is often on the technical implementation, whereas the view of the business is neglected. Increasingly...

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    Agile, oven-fresh documentation. Part 2: PlantUML with JBake

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      //

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