Insider Blog
Interesting News for Us and You
Technical and other Insights
It happens from time to time that we run into problems or situations in which finding a proper solution isn’t that easy. When we think that the solution we found is of interest to all of us or for you, we use this blog format to archive and share our findings with you. So, enjoy our technical insights and thoughts while reading.
How to use different DNS servers on specific domains for resultion – VPN Use-Case
How to resolve selected domains over VPN on LinuxIn todays world, more people use VPN services to work from remote than ever. However, in some Cases its not desirable to route all traffic and all domain name resolutions over the VPN connection. Even if the VPN-Server wants the client to configure itself to work like …
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Shopware 5 – High-Speed Parallel Thumbnail Generation
How to tune the integrated SW5 mechanism to work more then 22 times faster!Shopware 5 – Parallel Thumbnail Generation After Moving a Shopware 5 System to Another Server We hat a customer with 400k images and 1600k thumbnails that needed to move from an old hdd based server to a new ssd based one. The …
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BTRFS: Finding and fixing highly fragmented files
21. Oktober 2020 30. April 2021 / Von Bernd Helm / Das bewegt uns, Uncategorized / BTRFSWhat is BTRFS fragentation?Most of the best BTRFS features are powered by the copy-on-write technology. If a Application wants to rewrite a part of a File, like the first MegaByte, the Data is not written in-place but in an …
BTRFS: Finding and fixing highly fragmented files Weiterlesen »
Proper CHROOT in rescue mode using arch-chroot
Proper CHROOT in rescue mode using arch-chroot 16. April 2020 12. Dezember 2020 / Von Bernd Helm / LinuxMost Sysadmins know how to setup a basic chroot on a mounted filesystem (mount-binding dev, proc and sys) but this does not work in any case; for a complete chroot setup you would aso need dev/pts dev/shm, …
Proper CHROOT in rescue mode using arch-chroot Weiterlesen »
Why we dont use Samsung NVME Pro SSDs anymore
Why we dont use Samsung NVME Pro SSDs anymoreVon Bernd Helm / 20. Dezember 2019Investigation in PerformanceWhen it comes to buying an NVME SSD for a software developer workstation, you are faced with a choice: buy one cheap or buy one expensive. So far, I’ve chosen the more expensive ones because they promised better performance and longer life …
RAID5 vs Raid10 Performance Benchmark MDADM
RAID5 vs Raid10 Performance Benchmark MDADM Linux / Von Bernd Helm / 6. November 2019 Comment and Investigation in RAID Performance RAID 5 vs RAID10 has been discussed for ages; its common knowledge that RAID10 offers better performance – but how much depends on the actual implementation, hardware and use-case. I just got a Server with 4 x 16TB …
RIAK compact e/leveldb tombstones and reclaim disk space
RIAK compact e/leveldb tombstones and reclaim disk spaceLinux / Von Daniel Walter / 26. September 2017 / compaction, disk space, leveldb, riak, tombstoneThe ProblemWhen attempting to reclaim disk space, deleting data may seem like the obvious first step. However, in Riak this is not necessarily the best thing to do if the disk is nearly …
RIAK compact e/leveldb tombstones and reclaim disk space Weiterlesen »
Next-Gen Backup with BTRFS Snapshots for Root-Fs and Databases
Next-Gen Backup with BTRFS Snapshots for Root-Fs and DatabasesLinux / Von Bernd Helm / 6. September 2017What it is good forThis article is about using BTRFS snapshots as backup solution, usable for databases and full root partition backups. This is not a detailed Step-By-Step guide and requires some linux skills. This Post aims to share my experiences and save …
Next-Gen Backup with BTRFS Snapshots for Root-Fs and Databases Weiterlesen »
Basho RIAK KV TS CS documentation mirror
Basho RIAK KV TS CSDocumentation MirrorUncategorized / Von Daniel Walter / 8. August 2017 / basho, documentation, key value, riak, riak kvFind what you need to knowAs the Basho RIAK KV TS CS documentation is unreachable at the moment, we have created a mirror: https://riak.docs.hw.ag
PHP & Co.: Unsere Lieblinge
PHP & Co.: Unsere LieblingeSo arbeiten wir / Von Bernd Helm / 27. Juni 2017 / Für Entwickler, Für ShopbetreiberWir arbeiten nicht mit beliebigen Frameworks, Bibliotheken, Plugins und Programmiersprachen. Wir lieben es professionell. Software, die bei Helm & Walter entsteht, soll leistungsfähig und schlank sein. Hier unsere Favoriten: PHP PHP (rekursives Akronym für PHP: Hypertext Preprocessor) ist eine weit verbreitete und für den …
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