安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
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- How to have AWS RDS synchronous read replication?
So the "synchronous" ability is there already, but I don't find any option to have a synchronous read only replica For my case, I want to have read replica to reduce read load on main DB, but data is very sensitive so cannot afford to read old data at all, any suggestion for my case here with AWS RDS service ? like making the "standby" being
- Synchronous database queries with Node. js - Stack Overflow
I have a Node js Express app that queries a MySQL db within the route and displays the result to the user My problem is how do I run the queries and block until both queries are done before redir
- webserver - What is the difference between asynchronous and synchronous . . .
If the synchronous means ping-pong of request-response in that order, that is what blocking also means: thread is blocked until the request-response operation cycle gets completed In turn, asynchronous differs from ping-pong order, and that's also what non-blocking means: requestor doesn't wait for the response, hence no thread is blocked
- How to make javascript fetch synchronous? - Stack Overflow
In case you really need a synchronous request (you don't), use the deprecated XMLHttpRequest synchronous variant, to quote MDN: Note: Starting with Gecko 30 0 (Firefox 30 0 Thunderbird 30 0 SeaMonkey 2 27), Blink 39 0, and Edge 13, synchronous requests on the main thread have been deprecated due to their negative impact on the user experience
- difference between Asynchronous and Synchronous in . net 4. 5
Checks of completed awaiters and a state machine are involved This makes some asynchronous operations take more time than the corresponding synchronous operation On the other hand, most operations suited for async-await are naturally asynchronous and there is some extra processing involved to make it look and feel synchronous In these cases
- How can I access indexedDB synchronously? - Stack Overflow
It's naturally going to be quite hacky, since browsers try to get you to avoid doing synchronous storage access, since it can be slow (i e up to tens of milliseconds - vs memory RAM access which is several orders of magnitude faster) and will cause the main thread to lag while the data is being fetched Here's what I think you'd need to do:
- What is the difference between Asynchronous calls and Callbacks
Basically - if a callback does all it's work before returning to the caller, it's "synchronous" If it can return to the caller immediately after it's invoked - and the caller and the callback can work in parallel - then it's "asynchronous" The problem with synchronous callbacks is they can appear to "hang"
- java - How to understand the synchronous and asynchronouns . . .
synchronous - consumer receive(1000): Use this on a client applications that now and then needs to check if a message is intend for this client Example: poll every 60 seconds This only opens a connection to the server shortly
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