## SSD node review over 6 months

It's been a little over 6 months since I signed up with SSD Nodes and so I thought I'd share my experiences in the form of a short term review

Price: 8/10
Services: 7/10
Support: 6/10
Performance: 5/10

That being said, here is my breakdown of each of the categories mentioned above;

(Price: 8/10)
Although SSDNodes offers incredible prices, I have observed that the products do not meet the advertised performance claims due to the resource allocation methods used.

(Services: 7/10)
I am mainly satisfied with the SSDNodes services, although I wish that they offer better end user control for aspects such as; rDNS, IPv4 addresses, host name, backups, etc.
This all adds up when configuring and / or managing VPS containers – which results in the handling of tickets and additional time and resources.

On top of that, and in the same vein, I also found that managing things financially was tedious and confusing compared to other large VPS providers such as Digital Ocean or Vultr, because terminating and creating VPS containers requires opening tickets and where support responses after credits have been confusing and, in some cases, frustrating in a circular fashion.

(Support: 6/10)
This is closely related to the previous metric, although my personal experience with support has been the most positive, although I point out that I have not used SSDNodes for any live hosting, and that did not bother me. no waiting between ticket comments – however, and as I consider the lack of a ticket severity option to be a major negative aspect of web hosting, I chose to Offer a support note, based on live web hosting – and where a lack of ticket severity and slow response times are not conducive to a configuration of live web hosting .

(Performance: 5/10)
Unfortunately for SSDNodes, I have not been able to give them a password (on my own terms of course) on the performance index.
And even though I wouldn't say that VPS services are the worst on the market, I would, however, strongly criticize their use of performance claims that leave customers as if they were cheated.

That said, my biggest performance issue is on an 8-core VPS server, with total combined processor performance, lower than that of a single-core VPS processor.
Likewise, and on the I / O side, a similar model was found, as an NVMe drive turned out to be much slower than a physical hard drive.
And finally, where memory (32 GB) has proven to be slower than any other server, and where allocated resource methods would not allow improvements in caching.

I would also add that these performance results came from three different VPS containers, in three different locations, in order to avoid false positives.
And although the sample size is relatively small, compared to competing services, this was mainly due to the limited VPS management structure of the end user.

Therefore and with all that being said, my conclusion that if SSDNodes was not a bad experience in itself, since I was able to use their services for personal development and testing, I would not however choose SSDNodes rather than competing services such as Digital Ocean or Vultr for live hosting, based on end user management services, as performance.

– I hope this helps you

## PostgreSQL – Variables at the transaction level

Does PostgreSQL have variables at the transaction level? If not, is it possible to implement something like this fairly easily? Unfortunately, I am still relatively inexperienced with PostgreSQL and I have only discovered that you can set parameters at the session level.

I'm currently trying to implement historization like Hibernate has directly in PostgreSQL. A little info for which they don't know Hibernate: Hibernate has an array of revisions. It contains an identifier, the time and other information. For each table there is a table "_AUD". Each change in the same transaction gets the same revision ID.

To implement this directly in PostgreSQL, I would need a variable that I can use in a transaction and whose value can only be used in the same transaction. My idea is that each time a transaction is logged, a function asks if an ID exists for the transaction, if not, it creates one, otherwise it returns the one already created.

## Import of foreign characters fails

Hi @Sven,
Two things today:

1. I have to replace keywords, anchors and secondary anchors in some projects. I tried to do this with importing keywords and anchors, but what I got in the projects after importing are ?????? , ???????, ??????. The language is Korean.
While I was typing this, I thought about importing "exported data fields" that seemed to be working. It places the anchor in {} instead of comas but I guess it's okay.
2. After defining a "folder with data files to use", how can I put it back in the default directory after duplicating a project. I cannot delete anything in the data field.
Thank you!

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## Google Sheets ImportXML //div[@class= is not working

I am trying to scrape the div “tech-name” from this website

with the following formula

but I cannot figure it out why it says

Imported content is empty.

## firewall – Unable to open 8888 from a VM host to a Linux guest

I started a notebook jupyter service on a Linux guest, there is no problem for me to access it from a browser within the guest with the guest ; address as `localhost:8888`

When I tried to access it from my host, it didn't open for me.

I have checked the ping / telnet, this shows that the ping is good but telnet to the port fails to connect.

I also temporarily close the firewall on my host, no changes.

How to solve a problem like this?

## Cannot write file to 2×2 glusterfs even if there is enough free space

Bick1 and Brick3 are on the same node. Brick1 has about 2% free space, not enough for my file. Brick3 is about 85% free.

When I try to copy my file to my Gluster media, it fails and lets me know that there is not enough space available.

Do you have any thoughts on what might be going on?

## Ilford HP 5+ 4×5

One of my students developed her 4×5 film. We are trying to understand why each negative has a relatively consistent pattern on each negative? Thoughts? My guess is the turmoil during development.

## Why is \$ sum_ {p in S_n} 2 ^ {c (p)} \$ equal to \$ (n + 1)! \$?

It is obvious that $$sum_ {p in S_n} 1 = n!$$ because it just counts the number of permutations $$n$$ symbols.

But I also observed that $$sum_ {p in S_n} 2 ^ {c (p)} = (n + 1)!$$, or $$c (p)$$ is the number of cycles of $$p$$.

What is the combinatorial interpretation of this identity?