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Checking for a live database connection considered harmful
It is very common for me to look at a customer's database and notice a lot of overhead from checking whether a database connection is active before sending a query to it. This comes from the following design pattern, written in pseudo-code:
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The word checking is found 1380 times in 1117 documents.
The word for is found 413677 times in 117384 documents.
The word live is found 25513 times in 13593 documents.
The word database is found 4118 times in 2167 documents.
The word connection is found 2481 times in 1727 documents.
The word considered is found 2025 times in 1762 documents.
The word harmful is found 275 times in 218 documents.

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