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3 posts

Running a Notification System with BullMQ, Part 4 - How to Read the History You Stored
Aug 13, 2026
Delivery-history JSON sitting in S3 is hard to query as it stands. Four options weighed on always-on infrastructure, the shape of the query cost, and freshness, and why a nightly Parquet conversion won.
Passwordless DB Access and Least Privilege - IRSA, rds_iam, ALTER DEFAULT PRIVILEGES
Aug 6, 2026
How a Kubernetes pod connects to a database with no password anywhere (IRSA and rds_iam), and how the account that connects keeps its privileges minimal (owner separation and default privileges).
Running a Notification System with BullMQ, Part 3 - Where to Store Delivery History
Jul 25, 2026
Where should delivery history live? The trade-offs weighed across a dedicated relational DB, a serial S3 pipeline, SNS fan-out, and a Firehose route.