Author: Josh Kahn

This post is the second installment of a two-post series discussing how to integrate HAQM Quantum Ledger Database (QLDB) and AWS AppSync. This combination provides a versatile, GraphQL-powered API on top of the HAQM QLDB-managed ledger database. For information about connecting HAQM QLDB and AWS AppSync by building an AWS Lambda function and running a […]

HAQM Quantum Ledger Database (QLDB) is a purpose-built database for use cases that require an authoritative data source. HAQM QLDB maintains a complete, immutable history of all changes committed to the database (referred to as a ledger). HAQM QLDB fits well in finance, eCommerce, inventory, government, and numerous other applications. Pairing HAQM QLDB with services […]

In this post, I will describe how you can leverage ElastiCache for Redis with cluster mode enabled to enhance reliability and availability with little change to your existing workload. Cluster Mode comes with the primary benefit of horizontal scaling up and down of your Redis cluster, with almost zero impact on the performance of the cluster, as I will demonstrate later. If you have ever encountered a Redis cluster that is over or under-provisioned or just want to better understand its inner workings, please read on.

Most often, when we discuss HAQM ElastiCache, it is in the context of enhancing the performance of read-heavy database workloads. We update our applications to employ a read-through or write-through pattern to keep data in the cache fresh and ease the burden on the database. When used in this context, ElastiCache accelerates your high volume […]

HAQM ElastiCache makes it easy to deploy and manage a highly available and scalable in-memory data store in the cloud. Among the open source in-memory engines available to you for use with ElastiCache is Redis, which added powerful geospatial capabilities in version 3.2. This post explores using these capabilities to build an app that locates […]