If you are developing an application with an older non-async framework, and can work with all its defaults, **it can be a great tool**.

But if you need to change some of the defaults, support more than one predefined database, work with an async framework (like FastAPI), etc, you will need to add quite some complex extra code to override those defaults.

## Configuration protocol

Ztunnel, of course, needs to be dynamically configured in order to make decisions on how it should handle traffic.
For this purpose, we chose to use xDS transport protocol due to our expertise and existing infrastructure, and because the protocol is well suited to our needs.

                        // holds without causing a deadlock. This in turn implies that this thread does not need to release the project locks it holds while
                        // blocking waiting for an operation to complete and does not need to deal with another thread stealing its project lock(s) while blocking.
                        //

    hashFunctions[0] = Murmur3_128HashFunction.GOOD_FAST_HASH_128;
    int seed = GOOD_FAST_HASH_SEED;
    for (int i = 1; i < hashFunctionsNeeded; i++) {
      seed += 1500450271; // a prime; shouldn't matter
      hashFunctions[i] = murmur3_128(seed);
    }
    return new ConcatenatedHashFunction(hashFunctions);
  }

  /**

To fix this problem, you need to annotate the property with the appropriate annotation, for example `@InputDirectory` for a property representing an input directory, or `@OutputDirectory` for a property representing an output directory.

<2> <<gradle_wrapper.adoc#gradle_wrapper_reference,Gradle Wrapper>>.
<3> Scripts for executing Gradle builds.

If the `gradlew` or `gradlew.bat` files are already present in your project, *you do not need to install Gradle*.
But you need to make sure your system <<installation#sec:prerequisites,satisfies Gradle's prerequisites>>.

## Setting up your development environment

In order to make changes to Gradle, you'll need:

* A [Java Development Kit](http://jdk.java.net/) (JDK) **version 11**. Fixed version is required to use [remote cache](#remote-build-cache). 
* A text editor or IDE. We use and recommend [IntelliJ IDEA CE](http://www.jetbrains.com/idea/).  IntelliJ Ultimate will also work. You'll need IntelliJ 2021.2.2 or newer.

	// errors from prematurely closing the server
	responses := &sync.WaitGroup{}
	responses.Add(AllowedNonMutatingInflightRequestsNo * 2)

	// Block is used to keep requests in flight for as long as we need to. All requests will
	// be unblocked at the same time.
	block := &sync.WaitGroup{}
	block.Add(1)

	waitForCalls := true
	waitForCallsMutex := sync.Mutex{}

    hashFunctions[0] = Murmur3_128HashFunction.GOOD_FAST_HASH_128;
    int seed = GOOD_FAST_HASH_SEED;
    for (int i = 1; i < hashFunctionsNeeded; i++) {
      seed += 1500450271; // a prime; shouldn't matter
      hashFunctions[i] = murmur3_128(seed);
    }
    return new ConcatenatedHashFunction(hashFunctions);
  }

  /**

	posBases []string // position bases (i.e., file names)
	pkgs     []*types.Package
	typs     []types.Type

	// laterFns holds functions that need to be invoked at the end of
	// import reading.
	laterFns []func()

	// ifaces holds a list of constructed Interfaces, which need to have
	// Complete called after importing is done.
	ifaces []*types.Interface
}

// later adds a function to be invoked at the end of import reading.