Optimizing Performance in Firebase Cloud Functions - Defining Functions for Efficiency

Question

Optimizing Performance in Firebase Cloud Functions - Defining Functions for Efficiency

Currently, I am organizing the code in my index.ts by creating simple line function definitions like:

HTTP Example

export const demoHttpApp = functions.https.onRequest(
  (req, resp) => new DemoHttpClass(req, resp).run()
);

Real-Time Database Example

export const demoRtDb = functions.database.ref(DemoRtDbClass.PATH)
  .onWrite(event => new DemoRtDbClass(event).run());

The concept is to develop one class at a time and test them independently.

Each class constructor returns this, allowing for easy access to class members.

I have a concern regarding potential memory leaks or other malfunctions that may occur.

Since the operations are complex, I prefer using object methods and keeping them separate from other calls.

However, I want to avoid any issues or performance impact due to errors.

My understanding is that once the function execution is complete, the reference to the object is lost and memory is freed. Can you confirm this?

Thank you!

typescript firebase google-cloud-functions

Answer 1

Answer №1

One notable issue that stands out is the frequent creation of a new object instance every time the function is called. A more efficient approach would be to initialize the object outside of the function. By doing so, each new instance spun up will utilize the same object repeatedly when the function is invoked, ultimately conserving memory in the long term.

var demoHttpApp = new DemoHttpClass();
export const demoHttpApp = functions.https.onRequest((req, res) => 
    demoHttpApp.run(req, res);
);

Additionally, this method allows for the passing of Firebase database or authentication admin objects through the constructor, simplifying the testing process for these objects as well.

For example, here is how you can inject the admin database object:

var databaseClass = new DemoRtDbClass(admin.database());
export const demoRtDb = functions.database.ref(DemoRtDbClass.PATH).onWrite(event => 
    databaseClass.run(event)
);

Answer 2

One notable issue that stands out is the frequent creation of a new object instance every time the function is called. A more efficient approach would be to initialize the object outside of the function. By doing so, each new instance spun up will utilize the same object repeatedly when the function is invoked, ultimately conserving memory in the long term.

var demoHttpApp = new DemoHttpClass();
export const demoHttpApp = functions.https.onRequest((req, res) => 
    demoHttpApp.run(req, res);
);

Additionally, this method allows for the passing of Firebase database or authentication admin objects through the constructor, simplifying the testing process for these objects as well.

For example, here is how you can inject the admin database object:

var databaseClass = new DemoRtDbClass(admin.database());
export const demoRtDb = functions.database.ref(DemoRtDbClass.PATH).onWrite(event => 
    databaseClass.run(event)
);

Optimizing Performance in Firebase Cloud Functions - Defining Functions for Efficiency

Answer №1

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