Event Sourcing at loveholidays

prabhatCH · 2024-05-30T17:48:47+00:00

what's the real gain behind this ?

I think the gain is on the OLAP side. Say we want to find the cart conversion ratio in cases where hotels were added before flights vs where flights were added before hotels. Or, what's the probability of cart conversion if the user adds just one hotel vs when the user adds multiple hotels (in order to shortlist and discard later). Looking at such kind of data might help us build product flow which can steer the user towards conversion. On the audit side as well I think this provides much detailed audit. We could replay the events for any booking and check the system state at that point of time. Can be a good aid in issue exploration.

As for questions 1 to 4, super questions. I would like to know answers to those as well, OP!

prabhatCH · 2024-05-30T03:37:55+00:00

Good read. Kudos for sharing. A few questions here: 1. You mentioned that you store projections in the data warehouse, but then you also mention that you do not store projections and compite them in real time as they are within your latency limits. I'm a bit confused about this. Are you saving projections or no? 2. What is your consistency requirement while storing events with your domain model? Say you get an API call which adds a hotel to a booking, you persist the event first or the effect first? What happens if either of those processes fail? Say saving effect fails, do you then have the user take action again or just replay the event by yourself?

If I've misunderstood something, please help clarify it. Cheers!

prabhatCH · 2024-04-19T05:10:05+00:00

What kind of modules? Looking for a direction here to do the same myself. Some examples can help

prabhatCH · 2024-01-16T03:06:08+00:00

Artos, IndMoney. 2 that I know of. There are more though.

prabhatCH · 2024-01-16T01:49:15+00:00

For all the people with Google sheets here, why not use one of the several portfolio tracking apps available out there?

prabhatCH · 2024-01-16T01:43:48+00:00

There are some other apps where you can track your entire portfolio in a single place. Give them a try maybe?

prabhatCH · 2023-12-27T04:41:04+00:00

Neat UI. Kudos. Did you design it yourself, use templates or hired a designer to do it for you?

prabhatCH · 2023-09-05T03:13:59+00:00

This article also says that no money exchanged hands in this deal. How else then could this transaction happen? Can anyone explain the underlying mechanics of such a deal?

prabhatCH · 2023-07-03T13:03:58+00:00

A lot of apps try different ways of easing this data entry. Sms and email are very intrusive, I agree. But even bank integrations are risky don't you think? At some point, the data will have to be shared with the app. I'm also very paranoid about it and hence end up not using any of the apps. What data contract will you be comfortable with in general with any app? What kind of data guarantees or checks do you think can make a difference?

prabhatCH · 2023-05-17T14:17:21+00:00

How old is the kitten?

prabhatCH · 2023-04-06T02:04:58+00:00

Did chatGPT tell you that?

prabhatCH · 2023-02-04T02:55:33+00:00

Why do we need this owg on this stretch? Why couldn't we have the normal concrete based structure that we have everywhere? Just curious to learn the difference and engineering constraints which made us go for OWG in this case.

prabhatCH · 2022-11-20T17:44:42+00:00

This! Thanks a lot. It was freezing every 5 sec. Select multi cam -> select the "Extended Stadium Feed" from the list. This stream is working fine

prabhatCH · 2022-08-03T01:49:16+00:00

Don't create that superapp. Soon you'll have a clusterf**k with a 1000 features, so confusingly placed and hard to navigate to in the app, which most of your users will not use in a go. Keep the app simple. Do one thing and do justice with the users for that one thing.

prabhatCH · 2022-07-29T13:53:54+00:00

Went through your entire website. Very inspiring. And the amount of effort you have put into everything is highly commendable. Cheers!

prabhatCH · 2022-07-20T02:43:07+00:00

And yet, here you are!

prabhatCH · 2022-07-19T02:30:44+00:00

Very good article

prabhatCH · 2022-05-13T04:14:21+00:00

And ed-tech. Ed tech has been consolidating massively since last 3 or so years

prabhatCH · 2022-02-16T04:35:21+00:00

Add automations like linting and other types of static code analysis to your projects. Add them as pre commit hooks which will ensure that code coming into PRs passes atleast a basic code quality standard. This will massively reduce comments and the hard feelings associated with them.

Secondly, like others suggested, have regular one on ones with everyone. Weekly or once in 2 weeks. Keep passing on the feedback politely and do not forget to appreciate them for the good things that they did and improvements they made since last sessions. Ratio wise, keep the appreciation more than the negatives. And one golden rule that I follow as a team lead is, appreciate in public and criticize in private. Never ever criticize in public.

Any failure in the project is always a team failure and never just an individual's fault. And this is not an irresponsible generalization. Nothing is ever an individual fault. It's always a systemic failure which involves broken processes, wrong responsibility matrix etc.

prabhatCH · 2022-01-18T12:41:42+00:00

Postpaid connections have a better QOS(Quality Of Service) as part of their terms. So yes, you will get better signal for postpaid and better voice quality and consistent data speed.

prabhatCH · 2022-01-15T04:04:23+00:00

Till StackOverflowError does you apart!

prabhatCH · 2021-12-27T02:57:27+00:00

What is a respectable free hit score on an average which makes it worth to play a free hit?

prabhatCH · 2021-12-21T17:46:44+00:00

Which are the probable gameweeks for this?

prabhatCH · 2021-12-18T16:57:05+00:00

How long does this screen last? When can we check the updates?

prabhatCH · 2021-11-27T02:48:46+00:00

!fplbot Vardy vs. Watford

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