Video service over Http for mobile devices has two problems: limited memory or storage and unstable network connection and variable bandwidth. HTTP live streaming solve this with separation of concerns, file segmentation, and indexing.

The essence of Key Value Cache is to reduce data access latency. Common strategies for cache design include read-through/write-through and cache aside. The specific strategy should be chosen based on your business needs.

People don’t buy what you do. They buy why you do it. Simon Sinek coined a phrase ‘Golden Circle’ which has three tiers, from core to exterior - why, how, and what. However, average leaders think from what, how, to why.

People don't care about what you do; they care about why you do it. Simon Sinek introduced a Golden Circle that starts from the inside out: Why? How? What? Unfortunately, mediocre leaders typically think from the outside in.

North Americans bullshit the most. Develop your mental device to detect deception, dishonesty, corruption, fraud, insincerity, hypocrisy and falsity.

Compared to deliberate deception, the cost of being exposed after bullshit is lower. The bullshit detector is a hypothetical psychological anti-deception mechanism. The key to countering bullshit lies in recognizing the asymmetry of risk; if the other party has no stakes but advocates for something, they profit when successful, but only you suffer losses when it fails, then they are bullshitting you.

Managerial leverages can maximize the output of an organization. Those leverages are information gathering, information-giving, decision-making, nudging and being a role model.

The introduction of managerial leverage is aimed at high output. Leverage should be applied in management activities such as gathering information, providing information, decision-making, nudging, and leading by example. In summary, improve time management skills, reduce interruptions; focus on activities that create positive leverage to increase leverage ratios.

Some job and career choices are fundamentally incompatible with being meaningfully engaged on a day-to-day basis with a young family. We should be careful with time frame and approach balance in a balanced way.

Work often fundamentally conflicts with family life. If you don't set limits and design your life, companies and governments will drain you. Balance should occasionally be within your reach. Life is diverse; seizing the right moment can yield significant returns from small investments.