Key Topics in Backend Architecture: Product Positioning, Microservice Design, Real‑time Messaging, Idempotency, and Service Governance

The author, a senior architect, starts with product analysis and positioning before diving into microservice architecture design, emphasizing business‑centricity, high cohesion & low coupling, autonomy, elastic design, logging & monitoring, and automation.

Next, the evolution of real‑time message push technology is illustrated, followed by a comparison of load‑balancing solutions: moving from HAProxy (layer‑4) to Nginx (layer‑7) with WebSocket support. Sample Nginx upstream configuration is shown:

server 172.16.125.76:8066 weight=10;<br/>server 172.16.125.76:8077 down;<br/>server 172.16.0.18:8066 max_fails=3 fail_timeout=30s;<br/>server 172.16.0.18:8077 backup;

HAProxy configuration example is also provided:

server web01 192.168.137.203:80 check inter 2000 fall 3 weight 10

The article then addresses request‑level idempotency, recommending a low‑granularity, non‑intrusive approach using AOP annotations, Redis for distributed locking, and Redisson for atomic key handling and renewal in edge cases such as key expiration or master‑node failure.

Finally, a thorough discussion of service governance is presented, covering registration & discovery, dynamic configuration distribution, load balancing, fault tolerance, rate limiting, gateway & authentication, internal‑external network isolation, service scheduling, health checks, tracing, business‑level availability checks, continuous deployment, and automated self‑healing.

Throughout the piece, the author invites readers to discuss, share opinions, and join a dedicated architecture community, while also linking to additional resources and open‑source projects.