LFX Mentorship (Sep-Nov): Prometheus Native Histograms (#1497)

Proposing another project from the Prometheus project.
cc @perebaj

Signed-off-by: Bartlomiej Plotka <[email protected]>
Signed-off-by: Nate W <[email protected]>
Co-authored-by: Nate W <[email protected]>

Author: bwplotka

programs/lfx-mentorship/2025/03-Sep-Nov/project_ideas.md

@@ -234,7 +234,17 @@
   - Juraj Michalek (@jmichalek132, [email protected])
   - Bartek Plotka (@bwplotka, [email protected])
   - Saswata Mukherjee (@saswatamcode, [email protected])
-- Upstream Issue: https://github.com/prometheus/prometheus/issues/16945 
+- Upstream Issue: https://github.com/prometheus/prometheus/issues/16945
+
+#### Prometheus Native Summaries
+
+- Description: Prometheus Summaries are less but still widely used metric type. Currently, similar to classic histogram, a single summary is composed of multiple counter series. The native summary idea proposes to structure the summary type metric samples into a complex sample, similar to native histograms. As a result, bringing meanigful storage efficiency and transactionality gains. This project offers an opportunity to introduce relatively complex database change across Prometheus scraping, WAL, TSDB and querying; considering the precedense of native histograms. This project will allow mentee to learn about Prometheus, generally database internals as well as observabvility needs.
+- Expected Outcome: The proposal and demo Prometheus implementation is published.
+- Recommended Skills: Go, Prometheus
+- Mentor(s):
+  - Bartek Plotka (@bwplotka, [email protected])
+  - Jonathan Silva (@perebaj, [email protected])
+- Upstream Issue: https://github.com/prometheus/prometheus/issues/16949
 
 #### Podman Container Tools
 
@@ -799,4 +809,4 @@ Beyond emitting basic spans, this project will also document how to enrich trace
 Nina Polshakova (npolshakova)
 Joe McGuire (jmcguire98)
 
-- **Upstream Issue:** https://github.com/kgateway-dev/kgateway/issues/11818 
+- **Upstream Issue:** https://github.com/kgateway-dev/kgateway/issues/11818