Building a better DynamoDB throughput scaling tool

I use DynamoDB, Amazon Web Services’ managed NoSQL data store. It’s a fantastic tool, where there’s basically no management needs placed on me. That’s with two exceptions: Backups Throughput scaling Backups is fine. I built a small tool that gets the latest changes and stores them elsewhere. Throughput scaling is a bit more involved so I… Read More »

Only the Good Die Young (or Move Off-heap?)

Having some spare time over the Easter weekend I thought I’d spend a little time trying out a few things, including: Java 8 Direct memory allocation with sun.misc.Unsafe So I made a hash-map implementation that stores map entries on memory allocated outside the typical JVM heap: BinaryOffheapHashMap First of all: The GC process in Java is a lifesaver, allowing… Read More »

The economic scalability of DynamoDB

I’ve been using DynamoDB for a few months now after re-architecting a system which started becoming painful to scale on a traditional RDBMS system. The problem wasn’t necessarily read/write performance but rather the total storage space needed as a lot of “unstructured” blobs was stored in the DB. DynamoDB gives me a care free setup… Read More »