Observed Signal · Jun 12, 2026 · Product Preview · Source: DEV Community · Impact: 4/5 · Sentiment: Positive
Azure HorizonDB preview: automate reproducible lab with ARM
Azure HorizonDB is a new managed database service on Microsoft Azure that is PostgreSQL‑compatible for developers while using a different storage layer to deliver built‑in high availability and scalability. The service is currently in preview. The author provides a parameterized Azure Resource Manager (ARM) template (hdb-template.json) and a parameters file (hdb-parameters.json) plus CLI commands to deploy and tear down a reproducible test lab in about 15 minutes. The post includes examples for retrieving the cluster endpoint, connecting with psql/clients, and notes configuration details observed in the preview (large shared_buffers, effective_cache_size alignment with disaggregated storage, and full_page_writes disabled).
A new managed database service from a major cloud provider (Microsoft Azure) affects cloud infrastructure choices; PostgreSQL compatibility with a different storage design may influence performance, availability and migration decisions for data platforms used by adtech/martech vendors.
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Key Takeaways & Evidence Grounding
- Azure HorizonDB is a new database service on Azure and is currently available in preview.
- HorizonDB is PostgreSQL‑compatible from a developer perspective but uses a different storage layer intended to provide built‑in high availability and scalability.
- The author published an ARM deployment template (hdb-template.json) that creates Microsoft.HorizonDB/clusters and uses a default apiVersion value of "2026-01-20-preview".
- A sample deployment via Azure CLI (az deployment group create) combines the template and parameters and the deployment takes about 15 minutes.
- Preview configuration examples show shared_buffers ≈11241MB on a 2 vCore instance, full_page_writes is turned off, and extensions require setting azure.extensions via a parameter group.
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