Technology Geek

Two days of device posts produce streams of numbers tagged with device IDs, and the question that separates telemetry from insight: what do the numbers mean about the world? Device 4A7F reporting 31 degrees matters differently if it is the server room sensor or the loading dock. Azure Digital Twins is the semantic layer, a live graph of the environment your devices inhabit, a...

Kafka is one of the most capable event streaming platforms available, and one of the most operationally demanding to run yourself. Broker configuration tuning, ZooKeeper replacement with KRaft, partition leadership rebalancing after broker failures, TLS certificate management, and version upgrades that require rolling restarts across the cluster. Amazon MSK takes on all of th...

The edgeHub is a store and forward broker: routes between modules keep the local pipeline running with no cloud in sight, messages destined upstream queue on disk (size the storage for your worst realistic outage), and the child devices pattern lets the edge box act as gateway for downstream sensors that authenticate through it. Design the split deliberately: the edge runs th...

An S3 data lake without governance is a compliance liability and an operational headache. IAM alone cannot give you column-level security on Parquet files. There is no central place to see who has access to what. Data discovery depends on asking colleagues rather than running queries. Sensitive columns like SSN and credit card numbers need the same access controls as a databa...

OCI NoSQL Database is a serverless key-value and document store that scales read and write throughput independently, charges per operation rather than per instance, and delivers single-digit millisecond latency at any scale. It suits workloads like session stores, user preference storage, real-time leaderboards, IoT event ingestion, and any application that needs predictable ...