yes, when the active node goes down, the passive (backup) node takes over, but how exactly? how are they configured? btw, this is where keepalived comes in, let's dig deeper into the nuances... keepalived is used to create a virtual ip. this ip automatically follows your healthy…
More than giving the interview, the waiting period for the feedback is more exhausting.
Interview prep helps a lot. It helps you identify the gaps or rather start questioning everything, which significantly helps in finding answers which were casually ignored before.
Fun Fact - When you commit a transaction in PostgreSQL, the database doesn't immediately write your actual data pages to disk. Instead, it follows this sequence 1. Write to WAL 2. Force WAL to disk using fsync 3. Return a successful commit to your application 4. Write the actual…
Had a hell of an experience at EY GDS today. Will describe more shortly
Enforcing constraints on the database tables in relational db is quite essential. Everything works fine until the duplicates start creeping in and you may end up digging into the db records to identify the root cause.
One will only realise the importance of committing and pushing the code on a regular basis when all your work in the local machine and suddenly the device stops working...
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