# Week 17 Update: Odinson

Been a little caught up with my exams and then some festive stuff here in India, so was unable to provide updates for the last weeks. But have been working in some chunks in that time and got back completely last week.

So I ran the previously mentioned tests with higher memory limit and reported back to my mentors, to which I was asked left some comments, I will talking about below. Apart from that, made the changes that I was asked to, mainly addressing `state_cache.rs` file. After I did that, Michael also asked me to add some tests to which will give a good understanding of the working and if the current implementation is preserved, after adding the changes that I have made

I also fixed the merge conflicts, and few tests in a [PR](https://github.com/sigp/lighthouse/pull/7515) that I had worked on, quite some time ago. It was at halt because of a PR fixing the HTTP tests.

Apart from that, got my flights booked, applied for visa waiver for Buenos Aires. Looking forward to Devconnect.

## Work for the week

I got back to work, setting up Grafana, and running [lighthouse-metrics](https://github.com/sigp/lighthouse-metrics) locally, after which had a chat with dapplion, and made the changes he had previously mentioned, about having a new timer for each beacon state memory item, `measure_cached_bytes` function being called repeatatively, and other nits. After that, as Michael had also mentioned about having a check where we make sure that in case users run the nodes with a low `state_cache` limit, the cache and memory size performs accurately.
After I made these changes, Michael asked me to add some tests to my code which will address the memory measurement, byte limit, and recompute behaviour. Did that and pushed a [commit](https://github.com/sigp/lighthouse/pull/7803/commits/7ff72d5f0db7fed52f78d96a168bf41bb039d05b#diff-329fb23feab12cedf1442798a0416f2d75aeebc3ba9f53690eee6844eaa0b89e). Currently I am running the logs, checking for any possibility of OOM scenario, and waiting for their further review.

Apart from that, I was also going through the PeerDAS implementation in lighthouse, across the codebase, mainly the reconstruction and `DataColumnSidecar` section.

## Resources

1. Project [PR](https://github.com/sigp/lighthouse/pull/7803)
2. [HTTP API test fixes](https://github.com/sigp/lighthouse/pull/7515)

## Conclusion

Next week it will be a little challenging to put time to work as my exams still continue, and there is this festive season, called Durga Puja, but I am looking forward to joining the office hours having Kolby ML from Ream, and addressing the comments Dapplion mentioned and me and Michael discussed about