Preventing duplicate cron job executions I feel like sometimes cron jobs create more problems than they solve. It’s not the fault of the cron, but rather the jobs being executed. As the job is not yet completed and started the other cronjob. This leads to duplicate instances of cron jobs running for the same task. … Read more
Computer: Development of Computer Introduction For most people, a computer is a machine used for calculation or computation, but actually, it is much more than that. PreciselyComputer is an electronic device for performing arithmetic and logical operation. Or “Computer is a device or a flexible machine to process data and converts it into information.” To know about … Read more
The invention of the telephone Alexander Graham Bell Alexander Graham Bell, best known for his invention of the telephone, revolutionized communication as we know it. His interest in sound technology was deep-rooted and personal, as both his wife and mother were deaf. While there’s some controversy over whether Bell was the true pioneer of the … Read more
story of bulb invention Who Invented the Light Bulb? Do you know How bulb invented? Here we tried to solve all these queries. So let’s start story of bulb invention. Though Thomas Edison is usually credited with the invention of the light bulb, the famous American inventor wasn’t the only one who contributed to the … Read more
Best Wireless Bluetooth Earphones in India With the rapid removal of the 3.5mm audio jack from most modern-day smartphones, wireless Bluetooth earphones are slowly but surely becoming the way to go when it comes to audio solutions for most users. Audio product manufacturers have also understood the widespread appeal of untethered earphones and are bringing … Read more
Number masking or Call masking services Number masking or call masking is a solution where actual caller number is not being displayed to the customer. Here, we will understand that how this can be accomplished. Number masking or call masking is the best way for businesses to safeguard their customers’ identity, and prevent misuse of … Read more
Today, there are roughly 1.5 billion Internet-enabled PCs and over 1 billion Internet-enabled cell phones. The present “Internet of PCs” will move towards an “Internet of Things” in which 50 to 100 billion devices will be connected to the Internet by 2020. Some projections indicate that in the same year, the number of mobile machine … Read more
505 is a error that is signaled by browser when HTTP version is not supported by server i.e. when server not able to identify the HTTP protocol version used in request. … 511 ( server demands user to authenticate) “ network authentication required ” when server needs user authentication to access request.
The HyperText Transfer Protocol (HTTP) 504 Gateway Timeout server error response code indicates that the server, while acting as a gateway or proxy, did not get a response in time from the upstream server that it needed in order to complete the request.
The HyperText Transfer Protocol (HTTP) 503 Service Unavailable server error response code indicates that the server is not ready to handle the request. Common causes are a server that is down for maintenance or that is overloaded.