![]() On the other hand, if your application only needs an update every 5 minutes, it is less expensive to re-initiate an HTTP connection with each update than keeping a WS connection open for that duration when no immediate updates are required or available. In cases where your application demands new information as soon as it is available (think instant messaging), the subscription approach provides what is perhaps the very best sustained low-latency solution. In addition to their efficiency, subscriptions bring true real-time functionality to the table. For this reason, the approach proves very efficient in the case of small, incremental changes to large data objects. The power of subscriptions lies in their ability to communicate updates to individual fields as they occur in the database. This persistent connection is usually achieved by communicating via WebSocket (WS) rather than the standard HTTP transport. The downside: polling can be expensive-especially when you are repeatedly querying for large, complex objects for which most of the fields change infrequently.Ī more holistic approach to keeping the client in sync with your backend is using a subscription: a means of bidirectional communication that allows information to flow freely without needing to re-query the database. This approach can and does gracefully cover many use cases and provides a predictable, relatively responsive experience. For example, an investment application might allow its users to track their favorite stock prices by re-executing a query of the stock data every 10 seconds, perhaps even re-rendering some corresponding charts or graphs with that cadence as well. Perhaps the most straightforward way to keep the client (your users) seamlessly up to date with your backend is through intermittent polling. Making the ‘right’ choice requires that a developer weigh the application’s needs against the performance expenses associated with the various data acquisition methods. This is because there are numerous ways of achieving a real-time experience (or the illusion of it)-be it through programmatically re-executing data queries or by opening a steady two-way data stream via a WebSocket subscription or anything in between. When I encounter this demand in my web development work, I take a step back to consider the ‘right’ solution for that particular context. Often it is not even a conscious expectation-but instead is a more subtle enrichment of user experience that many take for granted. These museums are only a 30-minute drive from one another and offer a look at all the ancient life found in and around Utah.Today, there are many scenarios in which we expect real-time (or near real-time) functionality from our web applications. ![]() In addition to outdoor places, there are also a couple of museums of paleontology, notably Brigham Young University’s Museum of Paleontology in Provo, Utah, and the Museum of Ancient Life at Thanksgiving Point in Lehi, Utah. There are also fossils for purchase if you happen not to find anything. ![]() ![]() Here, visitors can search for trilobite fossils and actually keep the fossils they find! The success rate of finding trilobites here seems pretty high. The rest of the park has other sites to see and explore, but nothing compares to this massive wall of bones.Īnother fun place to stop is on the other side of the state in Delta, Utah. The Quarry is very accessible and air-conditioned, which is nice during hot Utah summers. The Quarry located near Jensen, Utah, is a building built around a quarry of hundreds of visible dinosaur bones. Dinosaur National Monument is the number one place to visit if you’re looking for sheer fossil count. I’m a Utah native and love exploring all around the state.
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