Docker container network performance optimization can be approached from multiple aspects: 1) choose appropriate network mode (host mode has best performance but poor isolation); 2) use custom networks instead of default bridge network; 3) optimize MTU settings to match network environment; 4) reduce network layers and hops; 5) use DNS caching to reduce domain resolution latency; 6) enable network performance tuning parameters (such as TCP Fast Open); 7) optimize VXLAN configuration when using overlay networks; 8) reasonably set container network bandwidth limits; 9) use service mesh to optimize inter-service communication; 10) monitor network performance metrics to detect issues in time.