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Finding Kafka’s throughput limit in Dropbox infrastructure | Dropbox Tech Blog

February 1, 2019 / English Content

At Dropbox, Kafka clusters are managed by the Jetstream team, whose primary responsibility is to provide high quality Kafka services. Understanding Kafka’s throughput limit in Dropbox infrastructure is crucial in making proper provisioning decision for different use cases, and this has been an important goal for the team. Recently, we created an automated testing platform …

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isync: free IMAP and MailDir mailbox synchronizer

February 4, 2019 / English Content, Knowledgebase

isync: free IMAP and MailDir mailbox synchronizerisync is a command line application which synchronizes mailboxes; currently Maildir and IMAP4 mailboxes are supported. New messages, message deletions and flag changes can be propagated both ways. isync is suitable for use in IMAP-disconnected mode.Synchronization is based on unique message identifiers (UIDs), so no identification conflicts can occur …

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Detecting Agile bullshit

February 5, 2019 / English Content, Software

The department of defense, has published a nice document to “detect” agile bullshit. The document is called DIB_DETECTING_AGILE_BS_2018.10.05 and was published on October 2018. We saved a copy on our site, because we think it is very very interesting…

Fail2Ban

February 1, 2019 / English Content, Knowledgebase, Unix

On these days I decided to tune a bit my new shiny linux server box. I started to set up fail2ban. I think fail2ban is very imporant nowadays because it is a good example of a tool for slowing down attacks without closing your server too much. Fail2ban is a daemon: it wll monitor your …

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?FileSystem is faster than RAM [under your Operating System]

January 19, 2019 / English Content, IT Featured Content

I am studying Apache Kafka (a “distributed streaming platform”) and I stubled upon this conclusion: the “disk read fear” a lot of projects have in the past, is a fake. A lot of distributed database started tutorial with the statement “disk read are slow, write are fast” which is true to some extent, and accounted …

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Implementing A Pure CSS Collapsible ← Alligator.io

November 28, 2018 / English Content

Collapsible widgets are a popular way to create sections of content that can contract and expand. There are a ton of different implementations out there. Here, thanks to checkbox input elements, label elements and the :checked pseudo-selector, we’ll be able create such widget without the need for extra JavaScript. Source: Implementing A Pure CSS Collapsible …

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Hyper VM Troubleshooting

November 9, 2018 / DevOps, English Content, IT Featured Content

Sometimes your winwos’ HyperV Hypervisor will refuse to start. The problem is tricky because the services seems started if you check them. Also the installation is successful, virtualization is enabled and so on. So what is wrong?

The Privacy Tax

November 3, 2018 / English Content

In the 1980, privacy was a lot easier to acquire. Banks can harvest information on us, but the limited computer power was a big limiting factor to their analyzing dreams.  For years Banks have computed the best credit options (for them) to sell to customers. Now the problem is on privacy. Google Plex can crunch …

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