![]() Connection timeoutīy default, connections will not close until. This allows multiple connections to independently come up and down without affecting the service. This is a random interval for each connection between 45 and 90 minutes. ![]() Since this library automatically creates prepared statements, it also has a default max lifetime for connections to prevent memory bloat on the database itself. Of course doing a series of queries, one awaiting the other will work as expected, but that's just due to the nature of js async/promise handling, so it's not necessary for this library to be concerned with ordering. There are no guarantees about queries executing in order unless using a transaction with sql.begin() or setting max: 1. A number of companies offer proprietary tools for PostgreSQL. The benefit of this is no weird generic "onerror" handler that tries to get things back to normal, and also simpler application code since you don't have to handle errors out of context. Client applications can use threads and create multiple database connections from each thread. It'll automatically defer to the error handling you have for that query, and since connections are lazy it'll automatically try to reconnect the next time a query is made. Connections are automatically taken out of the pool if you start a transaction using sql.begin(), and automatically returned to the pool once your transaction is done.Īny query which was already sent over the wire will be rejected if the connection is lost. Queries will be sent over the wire immediately on the next available connection in the pool. ![]() This means that we get a much simpler story for error handling and reconnections. users.js import sql from './db.js' async function getUsersOver ( age ) ).
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