In programming we often create copies of objects, intentionally or unintentionally. Some languages copy objects when passing then into a function (when you not specifically specify to pass by reference or pointer). However there still is the question of what is actually being copied. or when having a clone method what is actually being copied.

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Apply principles from the physical world to your apps database architecture.

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Last weekend I had an eye opening discussion with my wife. The thing is, we had a mango, a huge mango, and it was delicious and sweet. I had cut it in the morning and shared the pieces into bowels for my wife, her mother and me. and yes, mine was just a little bit bigger . Hmmm, that was so good, directly emptied my bowl.

A few hours later I saw there Is one bowl left. ...

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Setting up a webserver using nodejs is very easy. Using the HTTP-module simply create server, provide a handler function that will send some data back to client and start it on some port. But how difficult will it be to create one directly using the net module. The net module is in nodejs the way to build applications using the tcp protocol. HTTP is a protocol that is transferred within the tcp payload and it contains the application data.

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Do you know `localtunnel` or `ngrok`? These are services, that let you expose a local application server to the public internet. Essentially they are proxy servers, but allow to the public to access your local machine. I found that some VPN services also support such feature via port forwarding.

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