Ask HN: What is the cheapest, easiest way to host a cronjob in 2022? 4 years ago
I don't have much experience with AWS Glue, but would this fit the use case here?
https://docs.aws.amazon.com/glue/latest/dg/monitor-data-ware...
HN user
I don't have much experience with AWS Glue, but would this fit the use case here?
https://docs.aws.amazon.com/glue/latest/dg/monitor-data-ware...
What contexts are they not permitted? I know that not all browsers support them, but are there other limitations?
On page 5:
To find the index of an event, the application must mask the current tail index with the size mask of the ring. This commonly looks something like the below:
unsigned head;
head = cqring→head;
read_barrier();
if (head != cqring→tail) {
struct io_uring_cqe *cqe;
unsigned index;
index = head & (cqring→mask);
cqe = &cqring→cqes[index];
/* process completed cqe here */
...
/* we've now consumed this entry */
head++;
}
cqring→head = head;
write_barrier();
Am I misunderstanding, or is "current tail index" supposed to be "current head index?"How do they accomplish strong consistency without any hit to availability?