PTptrik·Nov 18, 2019Submission
Idea Graveyard of Guava (2017)
1 points · Open discussiongoogle
guava
Java2015–2025
google / guava
guava
Google core libraries for Java
37Distinct people
45Mentions
2Explicit recommenders
51.9KGitHub stars
What to know before exploring
What it is
Google core libraries for Java
GitHub
Where it is used
No documented product use was verified in the last source check.
What people are saying
While you're not wrong RE: object references, Java does have the `final` keyword that you can apply to fields, local variables, method arguments, etc. This prevents the value…
OmarAssadi used a recommendation phrase. 2 indexed comments match. This is a phrase match, not a verdict.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 6:01:32 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year45 dated mentions
Observed mentions: 2015-03-24 08:24:34 UTC to 2025-07-07 00:28:52 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2015 | 2015-01-01 00:00:00 UTC | 2016-01-01 00:00:00 UTC | 3 | 1 | 2 |
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 8 | 7 | 1 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 6 | 1 | 5 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 7 | 2 | 5 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 3 | 1 | 2 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 4 | 1 | 3 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 6 | 1 | 5 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 3 | 1 | 2 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 3 | 1 | 2 |
What Hacker News says
7 sourcesNot a book but from my interview bookmarks:
https://github.com/kdn251/interviews
https://github.com/aakash1104/Graph-Algorithms
https://github.com/google/guava/wiki/GraphsExplained
In Ask HN: What are the top textbooks for data structures?>> In contrast to companies like Google, Apple, Microsoft, Amazon etc. that have mountains of their own money to burn (rather than investors') on research and OSS side-projects
You are assuming that these companies are letting engineers to do side-projects that are unrelated to their day to day work?
As far as I know the OSS projects these companies put out are in line what they use internally for day to day work and it is absolutely core to their business.
Examples:
- Amazon: https://firecracker-microvm.github.io
- Google: https://github.com/google/guava
- Microsoft: https://github.com/microsoft/vscode
- Apple: https://github.com/apple/foundationdb
Am I missing the point? Are OSS projects from these companies that are side-projects?
While on the subject, I am not sure about Uber's contribution to OSS. Their projects tend to be outside of
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my purview.
>> Paying lavish SF engineer salaries to generate cool, but not revenue generating, software
Nobody is forcing Uber to employ people in California.
For Java, below are my favorites:
1. Jersey - https://github.com/eclipse-ee4j/jersey
2. Jetty - https://github.com/eclipse/jetty.project
3. Guava - https://github.com/google/guava
Common theme is - Easy to follow, clean documentation & use of consistent patterns.
In Ask HN: What are the “best” codebases that you've encountered?Internet Domain Name Explained
1 points · Open discussionIt's very easy to accidentally create O(n^2) code. For example, take a look at the test case added here:
https://github.com/google/guava/commit/4e41d621c3f413eb31da2...
In O(N^2) in CreateProcessIn practice there's a bit more to it than what the article describes, especially for a distributed cache: you need to have the Promise auto-expire so that if the machine that's performing the backend read disappears the other readers don't stay stuck forever waiting for it. It's also useful to have a feature in the cache itself that blocks the caller until the Promise has been fulfilled, so as to avoid repeated requests asking if the data is finally there.
As an aside, Guava loading caches[1] implement per-key locking so that multiple threads accessing a missing key simultaneously[2] would only lead to a single load with all other readers waiting for the loading thread to complete the fetch and populate the cache.
[1] https://github.com/google/guava/wiki/CachesExplained
[2] in the sense of "in the time it takes for the first accessor to c
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omplete the backend read"