#graphql

March 30, 2026•7 min read

Hotfixes for Shipped Apps with GraphQL Query Overrides

Persisted query overrides let us re-route a query ID to a different compatible query in production, without changing the client.

GraphQLZalando

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February 2, 2022•8 min

GraphQL directives - an introduction

This post gives an introduction to GraphQL directives, how to create custom ones, explains the different locations where directives can be used, and goes over some use-cases of directives.

GraphQL

January 29, 2022•8 min

How to avoid logging sensitive data in GraphQL

Metrics, Logging, and Tracing are some primary forms of monitoring we use in our services. In this post, I talk about how we can leverage the power of GraphQL to prevent sensitive information ending up in these monitoring tools.

GraphQLOptimizationJavaScript+1

June 14, 2020•8 min

GraphQL persisted queries and schema stability

In this post, I cover the topics — GraphQL persisted queries at Zalando and how we define and think about different levels of stability of our GraphQL schema.

GraphQLDesign

March 9, 2020•12 min

Modeling errors in GraphQL

GraphQL excels in modeling data requirements. Modeling errors as schema types in GraphQL is required for certain kinds of errors. In this post, let's analyze some cases where errors contain structured data apart from the message and the location information.

GraphQLDesign

February 22, 2020•6 min

GraphQL Optimization - Lookaheads - Prefetching

GraphQLOptimization+1

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February 19, 2020•7 min

GraphQL Optimization - Dataloaders

GraphQLOptimization+1

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February 18, 2020•6 min

GraphQL Optimization - Field Filtering

In this post, we are going to take a look at one of the primary optimizations we can achieve by using GraphQL Lookaheds - Field filtering. We will dive deep into what the different complexities are for applying lookaheads to optimize data between GraphQL server and a backend server.

GraphQLOptimizationJavaScript

February 9, 2020•6 min

GraphQL Optimization - Lookaheads

GraphQL offers a way to optimize the data between a client and a server. We can use the declarative nature of a GraphQL query to perform lookaheads. Lookaheads provide us a way to optimize the data between the GraphQL server and a backend data provider - like a database or another server that can return partial responses.

GraphQLOptimizationJavaScript