Here is a 200-250 word comparison of the two open-source projects for senior engineers: A comparison of thanos-io/thanos and tigrisdata-archive/tigris reveals distinct differences in momentum, community size, and use cases. Thanos, with 13,992 stars and a recent surge of 57 stars in the last 30 days, demonstrates stronger current momentum and a significantly larger community. In contrast, Tigris, with 971 stars and only 3 additional stars in the last 30 days, indicates a smaller, less actively engaged community at present. The use cases for each project diverge substantially. Thanos is tailored for highly available Prometheus setups, focusing on long-term storage capabilities, which positions it as a solution for monitoring and observability needs within the Prometheus ecosystem, particularly appealing to teams already invested in the Prometheus monitoring system. Tigris, on the other hand, is designed as a globally distributed, multi-cloud object storage service compatible with the S3 API, making it suitable for applications requiring low-latency, worldwide data access without the overhead of managing replication or caching, likely appealing to developers of cloud-native applications with broad geographical user bases. Both projects cater to different, specific architectural needs, reflecting their varied community engagement and growth rates. Thanos's larger community and recent popularity surge suggest broader adoption within the Prometheus user base, while Tigris's smaller but still notable community may indicate a more niche, yet potentially highly valued, set of use cases among developers of globally distributed applications.