2022-01-21 – Swimming
I thought I reached limit in last swimming session, but today, I can overtake it.
Result
Physical RAM Disk
Physical RAM Disk
Here, talking about physical RAM disk, not the software version.
Interface type
There are three types interface for physical RAM disk, one is PCIe interface, another SATA, or the external drive.
Module
There are two controllers on such board, one is to simulate device, second one is to address the RAM array.
Design
Following web page shows the design of such board
The way we made an external PCIe RAM disk based on the DDR memory Cache
Testing result
Full overview of the new DDR RAM disk
Products
SATA Interface
PCIe Interface
External Drive
Shop
References
If a stick of RAM is given a constant supply of power, could it be used as a permanent storage?
2022-01-18 – Swimming
2022-01-18 – Swimming
Quite fast for me this time, especially the first 50 meters, less than 1 minute should be my record. I also completed 1700m, because the swimming pool opened 3 minutes earlier.
Result
2022-01-17 – Jogging
2022-01-17 – Jogging
Back to normal.
Result
Learning – Docker Swarm Network Drivers
Learning - Docker Swarm Network Drivers
Bridge
The default network driver. Needs to map the port to host in order to access port of container.
Host
Removes network isolation between the container and the Docker host, and uses the host's networking directly. So the containers can not have port conflicting with other containers and also host.
The IP will be the same as host.
None
Disables all networking for containers. Usually used in conjunction with a custom network drive.
Overlay
Connect multiple Docker daemons together and enable swarm services to communicate with each other daemons.
Using this overlay network, the container on different hosts can communicate with each other.
Macvlan
Allow you to assign a MAC address to a container, making it appears as a physical device on the network. The Docker daemon routes traffic to container by their MAC addresses.
This allows container has different IP address on the host network.
2022-01-15 – Swimming
2022-01-15 – Swimming
Quite fast for me this time, especially the first 25 meters.
Result
Veritas Cluster Cheat Sheet
Veritas Cluster Cheat Sheet
Veritas Cluster configuration document.
References
Veritas Cluster Cheat sheet
VCS cheat sheet -complete
Veritas Cluster Cheat sheet (Cache)
2022-01-14 – Jogging
2022-01-14 – Jogging
After one day break, got better result and felt better.
Result
2022-01-12 – Swimming
2022-01-12 – Swimming
Swimming in re-opened swimming pool, performance is better than normal. This swimming pool is just re-opened after renovation. This is the second time for me swimming in this re-opened swimming pool, last time, I felt sinking.
Result
WordPress ERROR: Please solve Captcha correctly!
WordPress ERROR: Please solve Captcha correctly!
Recently, I got such error quite often when using google reCaptcha v3. To allow me login without reCaptcha verification, login to WordPress server, and rename plugin folder advanced-nocaptcha-recaptcha, then login normally. After login, rename back the folder.