1.Download and build
   occlum-gcc:
      ./download_and_build_redis.sh
   glibc:
      ./download_and_build_redis_glibc.sh
2. Run redis
   occlum-gcc:
      ./run_occlum_redis.sh
   glibc:
      ./run_occlum_redis_glibc.sh
3. Benchmark
   occlum-gcc:
      ./benchmark.sh
   glibc:
      ./benchmark_glibc.sh