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Database-Based Operating System 'DBOS' Does Things Linux Can't
 
Databricks CTO Matei Zaharia "said that Databricks had to keep track of scheduling a million things," remembers adjunct MIT professor Michael Stonebraker. " He said that this can't be done with traditional operating system scheduling, and so this was done out of a Postgres database. And then he started to whine that Postgres was too slow, and I told him we can do better than that...." This resulted in DBOS — short for "database operating system" — which they teamed up to build with teams Stanford and MIT, according to The Next Platform: They founded a company to commercialize the idea in April 2023 and secured $8.5 million initial seed funding to start building the real DBOS. Engine Ventures and Construct Capital led the funding, along with Sinewave and GutBrain Ventures... "The state that the operating system has to keep track of — memory, files, messages, and so on — is approximately linear to the resources you have got," says Stonebraker. "So without me saying another word, keeping track of operating system state is a database problem not addressed by current operating system schedulers. Moreover, OLTP [Online Transaction Processing] database performance has gone up dramatically, and that is why we thought instead of running the database system in user space on top of the operating system, why don't we invert our thinking 180 degrees and run the operating system on top of the database, with all of the operating services are coded in SQL...?" For now, DBOS can give the same kind of performance as that full blown Linux operating system, and thanks to the distributed database underpinnings of its kernel, it can do things that a Linux kernel just cannot do... One is provide reliable execution, which means that if a program running atop DBOS is ever interrupted, it starts where it left off and does not have to redo its work from some arbitrary earlier point and does not crash and have to start from the beginning. And because every little bit of the state of the operating system — and therefore the applications that run atop it — is preserved, you can go backwards in time in the system and restart the operating system if it experiences some sort of anomaly, such as a bad piece of application software running or a hack attack. You can use this "time travel" feature, as Stonebraker calls it, to reproduce what are called heisenbugs — ones that are very hard to reproduce precisely because there is no shared state in the distributed Linux and Kubernetes environment and that are increasingly prevalent in a world of microservices. The other benefit of the DBOS is that it presents a smaller attack surface for hackers, which boosts security, and that you analyze the metrics of the operating system in place since they are already in a NoSQL database that can be queried rather than aggregating a bunch of log files from up and down the software stack to try to figure out what is going on... There is also a custom tier for DBOS, which we presume costs money, that can use other databases and datastores for user application data, stores more than three days of log data, can have multiple users per account, that adds email and Slack support with DBOS techies, and that is available on other clouds as well as AWS. The operating system kernel/scheduler "is itself largely a database," with services written in TypeScript, according to the article. The first iteration used the FoundationDB distributed key-value store for its scheduling core (open sourced by Apple in 2018), according to the article — "a blazingly fast NoSQL database... Stonebraker says there is no reason to believe that DBOS can't scale across 1 million cores or more and support Java, Python, and other application languages as they are needed by customers..." And the article speculates they could take things even further. "There is no reason why DBOS cannot complete the circle and not only have a database as an operating system kernel, but also have a relational database as the file system for applications."

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Free/Libre 'GnuCOBOL' Compiler Reaches Maturity, Can Compete with Proprietary Offerings
 
An anonymous reader shared this report: After 20 years of development, the open source GnuCOBOL "has reached an industrial maturity and can compete with proprietary offers in all environments," said OCamlPro founder and GnuCOBOL contributor Fabrice Le Fessant, in a FOSDEM talk about the technology. GnuCOBOL turns COBOL source code into executable applications. It is very cross-platform, running Linux, BSD, many proprietary Unixes, macOS, and Windows, even Android. And the latest version, v.32, is being used in many commercial settings... Sobisch noted that the GnuCOBOL is seeing a lot of commercial deployments, such as for banking back-end apps, many of which are being migrated from Micro Focus, with users reporting performance improvements as a result. The French DGFIP federal agency moved from a GCOS mainframe to GnuCOBOL, with the help of Le Fessant's firm. Originally called OpenCOBOL, the project was started in 2002 and renamed GnuCOBOL in 2013. In the past three years, it has received attention from 13 contributors with 460 commits. Most Linux package managers have a copy of GnuCOBOL for the program for downloading... It can compile to C code (C89+), making it extremely portable, from mainframes to Raspberry Pi's, Sobisch said... Also new is SuperBOL, a development studio for GnuCOBOL developed by Le Fessant's OCamlPro. It runs as a VSCode Extension and features a full COBOL processor (written in OCaml).

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Code.org Tells Court Zuckerberg-Backed Byju's Undermines Mission To Teach Kids CS
 
theodp writes: Tech-backed nonprofit Code.org on Wednesday fired the latest salvo in its legal battle over $3 million in unpaid licensing fees for the use of Code.org's free [for non-commercial purposes] K-12 computer science curriculum by WhiteHat Jr., the learn-to-code edtech company with a controversial past that was bought for $300M in 2020 by Byju's, another edtech firm that received a $50M investment from Mark Zuckerberg's venture firm that still touts its ties to Zuckerberg on its Investors page. In a filing in support of a motion for default judgement, Code.org founder and CEO Hadi Partovi wrote: "Whitehat's continued use of Code.org's platform and content without payment following Code.org's termination of the Agreement has caused, and is continuing to cause, irreparable injury to Code.org, because it undermines Code.org's charitable and nonprofit purpose of expanding access to computer science in schools and increasing participation by young women and students from other underrepresented groups and because it jeopardizes Code.org's status as an organization described in Section 501(c)(3) of the Internal Revenue Code of 1986. As a Section 501(c)(3) tax exempt organization, Code.org may not use its assets to benefit for-profit entities without receiving fair compensation." According to the [proposed] default judgement, "Code.org is awarded the principal amount sued for of $3,000,000, along with attorneys' fees, costs, and expenses in an amount to be determined following Code.org's submission of an application, together with pre-judgment interest of $216,001.16, from May 26, 2023 to March 13, 2024, and any additional pre-judgment interest that may accrue until the date of judgment, calculated at the rate of 9% per annum pursuant to CPLR 5001 and 5004, plus any post-judgment interest at the statutory rate, for a total judgment in the amount of $[TBD]."

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