Explore Apache Kafka's log-based architecture: topics, partitions, segments, and offsets. Learn how append-only logs enable high-throughput messaging.

Build a bulk email sender in Go with SMTP, HTML support, and custom reply-to. Complete tutorial with code examples and environment setup.

Master email DNS records: SPF, DKIM, DMARC, and MX. Prevent spoofing, secure your domain, and build customer trust with proper authentication.

Explore Git's internal architecture: objects, refs, and the .git directory. Learn how Git stores data and tracks changes under the hood.