COM SCI 134
Distributed Systems
Grades
3.70
Average grade awarded in COM SCI 134. Not a student rating: this is what the grades were.
In the A range
81%
of the 181 letter grades
D, F or W
1.1%
of every letter grade awarded, plus withdrawals
Taken pass/no pass
0%
nobody in the record took it pass/no pass
The registrar's own records: 181 grades over 2 terms, Fall 2021 to Fall 2025. Every instructor is pooled here.
What is inside that record
No summer session is in that record.
The table below splits them, and term averages across those 2 terms ran 3.61 to 3.82.
Historical grades for all professors, across recorded terms. The course summary above includes all professors.
- A+ 11 · 6.1%
- A 89 · 49.2%
- A- 46 · 25.4%
- B+ 17 · 9.4%
- B 6 · 3.3%
- B- 7 · 3.9%
- C+ 1 · 0.6%
- C 1 · 0.6%
- C- 1 · 0.6%
- D- 1 · 0.6%
- F 1 · 0.6%
- I 1 of 182
Percentages are of the 181 letter grades. Grey bars are non-letter outcomes: incompletes (I).
How the non-letter outcomes are counted
They are excluded from the GPA entirely rather than scored, because counting a P as a 4.0 would be a fabrication.
By instructor
| Instructor | Predicted GPA | Raw | n | Terms | A range | Workload | Spring 2027 |
|---|---|---|---|---|---|---|---|
| ROSARIO, RYAN ROBERT reviews ↗ | 3.62 | 3.61 | 102 | 1 | 79% | - | not teaching it |
| KALLAS, KONSTANTINOS reviews ↗ | 3.79 | 3.82 | 79 | 1 | 82% | - | not teaching it |
Why Predicted is not the Raw average
“Predicted” is shrunk toward the course average, which is itself shrunk toward the department, so an instructor with a handful of students sits near the course mean rather than topping the list.
Grade records describe outcomes. For what a course is like to take, read student reviews written on dibs below or follow the separate external review link.
Workload and assignments
Work types reported in BruinWalk reviews of this course, across recorded instructors and terms. They may differ from this term's syllabus.
dibs has not read this course’s reviews, so it cannot say what kind of work it sets. That is dibs not having looked. It is not a course without papers or exams, and the reviews linked below are the answer until dibs catches up.
What comes first
dibs has not read a class page for COM SCI 134 in any term it holds, so it cannot say what comes before it.
Counted in courses rather than quarters: dibs does not know which of them a department lets you take together.
From the registrar's catalog
Lecture, four hours; discussion, two hours; outside study, six hours. Enforced requisite: course 118. Covers fundamental concepts regarding design and implementation of distributed systems. Topics include synchronization (e.g., clock synchronization, logical clocks, vector clocks), failure recovery (e.g., snapshotting, primary-backup), consistency models (e.g., linearizability, eventual, causal), consensus protocols (e.g., Paxos, Raft), distributed transactions, and lock. Students gain hands-on, practical experience through multiple programming assignments that work through steps of creating fault-tolerant, sharded key/value store. Exploration of how these concepts have manifested in several real-world, large-scale distributed systems used by Internet companies like Google, Facebook, and Amazon. Letter grading.
Sections in Spring 2027
From the people who took it
Student reviews
What taking COM SCI 134 was like: the work, the teaching, and what students wish they’d known.
Your experience could be the first.
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