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Bilibili's network team designed and evolved its data‑center fabric from a stacked Layer‑2 V1.0 architecture through an M‑LAG EBGP‑based V2.0 design to a uniform box‑type V3.0 deployment, achieving greater stability, scalability, cost efficiency, and operational simplicity via extensive ARP, LACP, DHCP, hash, and BGP optimizations.
WeBank adopted Tencent TDSQL, a MySQL‑based distributed database with strong‑consistency replication, auto‑sharding, read/write separation, automatic failover, and a management platform; deployed across two IDC regions using a 3+2 replica model, supporting petabyte data, billions of daily transactions, and high availability.
The article examines long‑standing pain points in network operations—from industry bias and costly manual tasks to data‑center networking and interconnect challenges—while exploring how SDN and modern automation can reshape the role of network engineers for more resilient, business‑driven infrastructures.