For my suggestion, it would be better if you replace media file system with hadoop hdfs and use spark as processing this would help performance of processing and better management.
Great video for overall backend infrastructure. Can you more video on System design for interviews, design twitter or newsfeed for example. I like your explanation and you should be able to find a great job in the U.S such as Amazon and Facebook. Do you have a linkedIn?
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brother how to fix microsoft store i drive it already but steal nothing batter my microsoft store code is 0x00000190 I need your if u can fix it or cannot reply me i will wait u thank u