HTTP request routing and validation with gorilla/mux

The Go networking library includes the http.ServeMux structure type, which supports HTTP request multiplexing (routing): A web server routes an HTTP request for a hosted resource, with a URI such as /sales4today, to a code handler; the handler performs the appropriate logic before sending an HTTP response, typically an HTML page. Here’s a sketch of the architecture:read more

Source: LXer

[$] Meltdown strikes back: the L1 terminal fault vulnerability

The Meltdown CPU vulnerability, first disclosed in early January, was frightening
because it allowed unprivileged attackers to easily read arbitrary memory
in the system. Spectre, disclosed at the same time, was harder to exploit
but made it possible for guests running in virtual machines to attack the
host system and other guests. Both vulnerabilities have been mitigated to
some extent
(though it will take a long time to even find
all of the Spectre
, much less protect against them). But now the newly
“L1 terminal fault” (L1TF) vulnerability
(also going by the name Foreshadow) brings back both
threats: relatively
easy attacks against host memory from inside a guest. Mitigations are
available (and have been merged
into the mainline kernel
), but they will be expensive for some users.

Source: LWN

Intel continues to optimize its products around AI

Normally, this is the time of year when Intel would hold its Intel Developer Forum conference, which would be replete with new product announcements. But with the demise of the show last year, the company instead held an all-day event that it live-streamed over the web.

The company’s Data Centric Innovation Summit was the backdrop for a series of processor and memory announcements aimed at the data center and artificial intelligence, in particular. Even though Intel is without a leader, it still has considerable momentum. Navin Shenoy, executive vice president and general manager of the Data Center Group, did the heavy lifting.

News about Cascade Lake, the rebranded Xeon server chip

First is news around the Xeon Scalable processor, the rebranded Xeon server chip. The next-generation chip, codenamed “Cascade Lake,” will feature a memory controller for Intel’s new Intel Optane DC persistent memory and an embedded AI accelerator that the company claims will speed up deep learning inference workloads by eleven-fold compared with current-generation Intel Xeon Scalable processors.

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Source: Network World