syncmap | A thread safe map implementation for Golang | Map library

I am using an ExecutorService fixedThreadPool() to run a TASK.

A TASK here is defined as downloading a file from a specific URL and saving it to the database if it doesn't exist or else read the file from the database only. So it's more like a reader-writer problem where any of the thread of executor thread pool can act as a writer for once and others will be a reader for the subsequent request.

I am using Semaphore to perform this but the issue with this approach is subsequent read requests are happening sequentially.

If 4 TASKs are intended to hit the same URL I needed the synchronization till the file is downloaded and the semaphore is released i.e. out of 4 threads anyone can acquire the lock and rest 3 are waiting. After the download completes all the remaining 3 threads should simultaneously read the downloaded file. But this last step is happening sequentially in my case which will have an impact on project performance as well.

Having said the above use case, the following is my sample code:

Following Runnable is passed to ExecutorService to execute the task on the SharedObject class.

How would I modify the following to fail with concurrent writes (Using If-Match and ETag headers) ?

I have a SyncMap defined as follow:

We have started a project to create a Turkish speech recognition dataset to use with DeepSpeech.

We finished preprocessing task of Ebook. But we couldn't finish the forced alignment process with Aeneas.

According to its tutorials for forced alignment, you need a text file and its recorded audio file. While preprocessing of Ebook we have created 430 text files which are edited and cleaned for aeneas format (divided into paragraphs and sentences using nltk library).

But, while processing our created task object and creating its output file (Json file), we couldn't merge output files. For every Aeneas file, it starts from the beginning of the audio file.

It seems we need to split our audio file to 430 parts, but it is not a easy process.

I tried to merge Json files with:

during project I wanted to emulate ( ionic cordova emulate ios ) then it asked me ( and I usually say yes ):

I was going to add a new plugin to this app, it works fine on ionic serve but when i decide to build it using ionic cordova build android ending up having this error

I am trying to understand the SynchronizedMap and I ran the below code. I get the below Output with an exception. According to my understanding the exception is caused when the get() methods are trying to access the syncmap when a thread is still executing a write on the map or Thread is in the Sleep state. Is my understanding correct or am I missing something ?

My goal is to have a custom type the one I could derive and add extra methods, for example, when using a map this works:

In the example, I'm trying to store 1 at the key "xxxxxxx" in the syncmap called value. The type of value is interface{}. So, I have a type assertion to make it a syncmap.Map, which is mm. Then, I add the new entry to mm. Unfortunately the new entry, doesn't get added to value, only to mm. Looks like mm is a copy or something. I'm not sure how to make this work.

To be specific, I figure I need to do the type assertion to add the entry. But, I think the type assertion is making a copy. Can you advise on how to do this so that the entry ("xxxxxxx", 1) is actually added into the syncmap called value?