Aws postgresql 1011/4/2022 ![]() ![]() ![]() It is implemented by streaming the write-ahead-log (WAL) records in binary format to the replica, which then get applied byte-by-byte i.e. The traditional mechanism in PostgreSQL for keeping standby/replica nodes in-sync with the primary is physical replication. It took ~27 hours! SELECT coalesce((octet_length(c1::text)) / (1024.0), 0) AS size FROM t1 ORDER BY size DESC LIMIT 1 Logical replication pluginīefore getting into which logical replication plugin to use, let’s look under the hood and understand logical decoding. To ensure it doesn’t impact normal db operations, we temporarily provisioned a hidden replica just for running it. ![]() Warning! This query can be very expensive on a large db. We based this limit on the max size of the json columns that existed in our db using the following query: If the data exceeds the specified size limit, then it gets truncated, so beware of using it with json types. This can be worked around by choosing “Limited LOB mode” when creating the task, which allows you to set a known limit which is applicable to all the LOBs in the db. The problem with such columns is that they can potentially contain unbounded data and hence DMS has no clue about how much memory to pre-allocate for them during migration. For homogeneous migration (i.e both source and target dbs are same), partially supported data types are mostly what DMS calls “Large Objects” (LOBs). If you use json data type in your db, you may come across this case when migrating from PG to PG. Partial support on the other hand means DMS can migrate these data types but only under certain conditions. If that’s a deal breaker then you may need to evaluate other options for migration. If you are using data types which are not supported, then those columns won’t get migrated. You can even create dummy endpoints and tasks just for this purpose - even a source db with just the schema loaded should be sufficient. For that, make sure you check the “Pre-migration assessment” option when starting the task. One good thing is that databases can be checked beforehand for compatibility so that there are no surprises during migration. tsvector whereas others that are supported partially eg. There are some pg data types which are not supported at all eg. There are certain limitations about which data/column types are supported. Refer AWS documentation for complete list of prerequisites. For PostgreSQL, the server version needs to be 9.4+ and pglogical extension needs to be installed on both source and target clusters.you can’t have source and target both outside AWS. Either one of the source or target endpoints should be on AWS i.e.There are a few prerequisites for using DMS, mainly: The following diagram illustrates the replication process: It also provides HA/Resiliency with Multi-AZ replication instances. You can perform one-time migrations (full load), and/or replicate ongoing changes (CDC) to keep sources and targets in sync. You may also create the target tables beforehand yourself, if you prefer. DMS creates the tables and associated primary keys if they don’t exist on the target. Then you schedule a task that runs on this server to move your data. You create source and target connections to tell where to extract data from and load to. Using DMSĪt a basic level, DMS provides a server in the AWS cloud that runs replication software. It can be used to migrate data into the AWS Cloud or between combinations of cloud and on-premises setups.Īfter evaluating all the options we ended up choosing DMS. Consistency can be impacted if infra is not optimized correctly.ĭata migration service (DMS) is an AWS cloud service that makes it easy to migrate relational databases, data warehouses, NoSQL databases, and other types of data stores.No support for replicating schema changes (DDLs).Performance and maintenance overhead on source db.It’s an asynchronous PostgreSQL replication system which allows multi-source and multi-target operations. Also, there are some restrictions if there are large objects in the db.Īs we had a couple of very large databases which couldn’t afford a long write downtime, this approach was out of question for us. PostgreSQL comes with the pg_dump and pg_restore scripts which can be used to copy data between clusters in a clean way but it may involve significant downtime for large databases. Options for PG migration pg_dump/pg_restore We have added PG master and one standby as PGPool backends, where read-write requests are served by the master node and read-only requests are served by the standby node. This diagram shows our setup where the applications connect to pgpool nodes via HAProxy. ![]()
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Download podcasts listen later stitcher11/4/2022 ![]() ![]() There are no auto-downloads: because it’s 2018, not 2005 Unlike Apple, Google is earning from podcasting. Google’s search-first strategy for podcasts should deliver the search giant more search traffic: which it effectively monetises. ![]() However, Apple earns nothing from podcasting. This can only be good news for the podcast industry.Īpple takes twelve hours to earn as much money as the entire US podcast industry earnt last year. With Google’s scale, alternative chart data is likely to be available at some point. (Neither are Spotify, TuneIn or Stitcher, incidentally but they account for less than 10% of all podcast downloads).Īpple also produces the only podcast chart: a trending chart of podcasts that can be manipulated and are clearly being targeted by a number of ingenious schemes. Google’s producing this podcast app by searching the entire internet for podcasts. Podcast apps are all monitoring Apple’s database for new podcasts to add. This relaxes Apple’s grip on podcastingĪ dirty little secret? Apple might be responsible for about 60% of podcast downloads through its own apps: but it’s actually responsible for over 90% of podcast downloads.Įven if you use independent apps like Overcast, Pocket Casts, Leela or others, they’re all pulling their podcast data from the iTunes API, Apple’s database. ![]() If podcasters grasp this opportunity correctly, it could at least double podcast downloads. #Download podcasts listen later stitcher android#Even in the US, Android has 53.3% market share. And for the first time, Android devices have a proper in-built podcast experience. In spite of Apple devices being responsible for about 60% of podcast downloads, Apple has a less than 20% share of the global smartphone market. ![]() Bills to pay when renting a house11/4/2022 ![]() There are a large number of conditions, where you can get a discount of your council tax. If you live in an HMO, your council tax is paid by the landlord, but it’s worth is generally calculated in the price. Use My Council Tax to find an estimate of your council tax.Ĭouncil tax is typically paid the the person or people who occupy the property. It’s slightly different for every council, so go ahead and check yours for more information. It’s based on the value of the property and is somewhere in the range of £1,000 to £3,000 per annum. Make sure you check your tenancy agreement !Ĭouncil tax paid for your local council, fire department and police department services. #Bills to pay when renting a house licenseIf you’re renting an HMO and share your accommodation with other people, check your tenancy agreement to see exactly which bills and utilities are included in your rent and which are not, if any.įrequently, you’ll see that broadband internet, television and TV license are excluded from the landlord’s responsibilities and are up to the tenants to deal with. ![]() However, they also share common facilities with other tenants, like a kitchen, living room, bathroom, garden, etc.Įach tenant has their own tenancy agreement with the landlord, but due to the nature of the living arrangement, it’s a single household and bills are usually calculated as a whole.Īlso, council tax is calculated for the whole property and thus it makes more sense for the landlord to deal with the utility companies and council, but include the price in each tenant’s rental payments. HMO tenants rent their own room, which they have exclusive access to. Typically, this type of arrangement is often available for HMO tenants. It’s easy to predict a single expense than a bunch of them going to a bunch of different directions. This is very useful for tenants, because they pay a static flat amount of money to a single person each month. Keep the warmth at home this winter! Switch and save money with slothmove! If the landlord is responsible for all or portion of the billsĪ second option is to have some or all of your bills included as part of the rent. It’s likely that all utilities will since be listed in your name and you will have personal obligation to pay and manage them. Have them add a written agreement to the tenancy agreement including these responsibilities. If there isn’t make, sure to discuss with your landlord which utility bills you’re responsible for and how their payment is going to take place. “To arrange immediately with the relevant supply company for all accounts for water, gas, electricity, telephone and television licence (where applicable) at the Property to be addressed to the Tenant in their own name and to pay all charges for these” Your tenancy agreement should feature a clause similar to the one below: In this case, you’re likely to be solely responsible for paying all bills, utility services, council tax, etc. Don’t share any facilities with the landlord.Don’t share any facilities with other tenants of the same landlord.Don’t use any additional services from your landlord (like cleaning, housekeeping, meals). ![]() Occupy the property solely (or with family, children, partner).You’re probably using a standard AST (assured shorthold tenancy) if you: Slothmove Utilities And Mobile Contractsīack to top How bills are regarded in the tenancy agreement If the tenant is responsible for the bills.Deposit Recovery Claims – Claim your deposit back.eGuide – Get Repairs to Heating and Hot water Units.eGuide – Get your tenancy deposit protected !.Who is responsible for the bills of a rental property | The Tenants' Voice ![]() Fitted stock vs perfect balance11/4/2022 ![]() ![]() However, your wheels themselves also have to be perfectly balanced or they won’t roll smoothly. Wheel Balance Explained:Īs we mentioned above, alignment is about direction, angle, and how your wheels sit when mounted to your car. It’s actually a fairly normal occurrence, even though it isn’t all that common. Even just the stress and strain of driving day after day for years can eventually lead to one or more of our wheels falling out of alignment. Hitting a bump too hard can even tweak a wheel out whack. Taking a turn too sharp and placing too much strain on a wheel or axle can cause the alignment to shift. What can cause a wheel to come out of alignment? It may be hard to notice your vehicle’s caster alignment being off, but the easiest way to tell is if one of your wheels is too far forward or back in your wheel well, leading to rubbing along the well if you go over too large of a bump. Caster is the angle of the steering pivot as seen from the side of the vehicle.Some tuners even intentionally skew their car’s camber to get a particular look (even though it really doesn’t have any benefits in terms of tire longevity). If your wheel leans to the side in either direction, your vehicle is said to have misaligned the camber. Camber refers to the angle of your wheel if you were to view it from the front of your vehicle.If your car inexplicably pulls one direction or refuses to drive in a straight line when you take your hands off the wheel, you more than likely have at least one wheel with toe misalignment. This is perhaps the most common form of misalignment. ![]() Toe refers to the angle of your tires in relation to one another.There are three different ways your wheel is aligned in your car: It’s about what direction and angle your wheels roll along at. Surprisingly, wheel alignment has very little to do with your wheels and more to do with your car’s suspension system. Wheel alignment is the term for how your wheels sit when mounted to your car and wheel balancing is what’s done to perfectly balance the weight of a tire and wheel assembly so that it travels evenly. Originally published in 2017 and updated in 2020 to reflect technical and industry changes, we explain the major difference between wheel alignment and balancing on our blog. These services are known as “wheel balancing” and “wheel alignment”. Your wheels have to roll straight, point in the same direction, and be evenly balanced all the way around in order for your car to drive as it should and provide a smooth ride to your destination. ![]() Windows photo viewer11/3/2022 ![]()
Movavi Photo Manager (Picverse Photo Manager). #Windows photo viewer for windows 10#
Fenics and gmsh11/3/2022 ![]() ![]() ![]() #FENICS AND GMSH HOW TO#How to create a constant boundary conditions using a geometrical identifier. FEniCS provides functions to access individual elements of cd and fd. Create a simple mesh using the GMSH Python API and load it into DOLFINx. These can be separately invoked:Ĭd=MeshFunction(‘size_t’,mesh,”geometry_physical_region.xml”) įd=MeshFunction(‘size_t’,mesh,”geometry_facet_region.xml”) Ĭd contains information about the interior regions and fd contains information about the boundaries. “mesh” contains information of interior regions and boundaries. Which can now be imported into FEniCS through the command: FEniCS provides a function to carry out this conversion: xml which is the preferred format in which FEniCS reads meshes. This mesh file can be visualized (gmsh geometry.msh): Saved as geometry.geo, the above can be meshed in 2d by the command Here is a GMSH code which makes a 2-D geometry (circle inside a square): The scripting language can make repetitive tasks particularly efficient. #FENICS AND GMSH FOR FREE#It has both a GUI and a scripting language interface. One such tool that is often used in connection with FEniCS is Gmsh, which can be downloaded for free from the site. Currently supported libraries are FEniCS, FEniCSx, firedrake and ngsolve. Fortunately, it can import geometry, meshes, element connectivity from GMSH which is a separate and more capable free and open source meshing software. Description FEM on Colab is a collection of packages that allows to easily install several finite element libraries on Google Colab. Convert the mesh into XML format using the dolfin-convert script. But now my mesh has not have a structured gird. If my mesh has a structured gird, it is okay, because the FEniCs tutorial has information on that. And interested to see the contour plot of my solution. Use Gmsh to generate a finite element mesh from the geometry file. I created a mesh using finite element mesh generator called Gmsh and used to solve my PDE problem using FEniCs, python version. ![]() Steps to create a FEniCS Demo for a particular geometry Create a geometry file in the Gmsh script language. a mesh using the previously discussed Gmsh, we define the geometry of our domain in the. FEniCS is a very capable free and open source Finite Element solver but its geometry and meshing capabilities leave something to be desired. Once you are comfortable with FEniCS and Gmsh, you can create your own demos by following the steps below. Due to the peculiarities of FEniCs, making the transition to 3D. ![]() Snoo pingas usual11/3/2022 ![]() It wasn’t until I played it back that I heard the infamous word, and thought to myself that it sounded like the word ‘penis.’”Ī word that sounds like “penis” goes a long way online, and soon other YouTube Poop creators started using the pingas sound bite in their own videos. So naturally I cut it, paste it into my project and zoom into his face. “I was just putting random clips together like I always did, and noticed the character Scratch doing this goofy face. Mari was more focused on the visuals than on the audio when she produced it. The genesis of pingas, like many memes, is inauspicious and completely accidental. Midway through “Robotnik Has a Viagra Overdose,” Mari inserted a short clip from a Sonic episode called “Boogey-Mania.” In the original clip, two of the Robotnik’s henchmen are caught eavesdropping, and the villain (played by singer and voice actor Long John Baldry) remarks, “Snooping as usual, I see.” Mari cut this line down to the now-iconic phrase: “Pingas.” They have titles like “Robotnik Becomes Prime Minister,” “Robotnik and Mama Luigi get Naked and Watch Countdown!” and “Robotnik Overules a Banana.” Her most famous work, however, is called “Robotnik Has a Viagra Overdose.” Like that mysterious vandal, Mari’s YTPs often focus on the villain of the Sonic franchise, Doctor Robotnik. The only real thought process that I have is ‘If it doesn’t make me laugh, it won’t make anyone laugh.’” In short order, her YTPs started garnering attention. ![]() #Snoo pingas usual software#“I will normally just throw a bunch of Sonic episodes into my video-editing software and then just see where it takes me. “When it comes to creating a video, I don’t really plan anything ahead,” Mari says. “Someone had vandalized a Wikipedia article to say something along the lines of ‘Check out the video Robotnik on the Toilet,’ and of course me being a curious teenager I decided to do exactly that,” she recalled. Mari’s introduction to the format is a tale as old as time. Her work almost always uses the Sonic series, which is a potent source of material thanks to its “over-the-top” voice acting and “great and incredibly lazy animation.” ![]() The YouTube Poop artist Stegblob, otherwise known as Mari, describes her videos this way: “An episode of Sonic but every time something happens, something else happens instead.” Clips often stutter or repeat, swapping between video sources with little internal logic, and often recontextualizing cheaply produced childrens’ entertainment in confusing or profane ways. #Snoo pingas usual series#Many YouTube Poop videos have common sources: old cartoons or commercials, among them, the mid-’90s animated TV series Adventures of Sonic the Hedgehog. They can often be disconcerting and aggressively alienating (the use of intentionally harsh-sounding audio in YTP is known as “ear rape”). The videos often lack plot or story arcs, and instead are more like freestyle video remixing - creating a work that evokes a feeling more than a coherent narrative or thought. YTP videos are difficult to define, but the general mode is to take existing media and distort it, editing clips so that it appears that characters are saying things that they did not or altering the meaning of scenes. In the mid-aughts, one of the most popular types of video on YouTube, alongside vloggers and makeup tutorials and comedy skits, was known as YouTube Poop. Nowadays, YouTube is a meme’s last stop before the graveyard. It is one of the best-known Sonic memes and a genuine YouTube-born phenomenon, from back in the days when YouTube could launch a meme. Pingas is the end result of a more ancient internet-content cycle, one that chewed up pop culture and mashed it into something unrecognizable and inexplicable. #Snoo pingas usual movie#Will the movie be any good? Will the newly redesigned Sonic, which forced the film to be delayed for a couple of months, be worth the wait? Are we going to get to see iconic sidekick Tails? Perhaps most crucially, fans are wondering: Will Jim Carrey, as the evil Doctor Robotnik, say the word “pingas”? ![]() When the Sonic the Hedgehog movie lands in theaters this Friday, longtime fans will have many questions on their mind. ![]() Program like microsoft access for mac11/3/2022 ![]() ![]()
With Base, you can easily build multipurpose tables, queries, and reports. The intuitive graphical user interface keeps that database creation and management simple. #Program like microsoft access for mac free#
Photo templates for photoshop11/3/2022 ![]() When your product image is retail-ready, go to File > Save As at the top of the Photoshop window. Step 5: Save your product image for your eCommerce store Use the centre point to help you get the product in the middle. Unless your product is perfectly square, only two points on opposite sides of the product should meet the outer guidelines. ![]() Resize until no part of the product is outside the outer guides, and the longest/widest points are just touching the guides. As mentioned above, never enlarge your product images. Hit Command + T on your keyboard and resize your product image by holding down shift and dragging the the corners inwards. You need to either create a smaller template or take better-quality product images. The product image should be larger than the template if you’ve pasted it and it’s smaller than the guidelines, your template is too big. Go back to the template file and hit Command + V and the product image will appear in the template. Don’t freak out - it’s only been placed in your clipboard. Hit Command + X on your keyboard and it’ll disappear. A dotted line (marching ants) will appear around the product image. Open your product image in Photoshop and hit Command + A on your keyboard. If you’re using Windows, substitute ‘Command’ with ‘Ctrl’. Note: The following step involves keyboard shortcuts as written for a Mac. Step 4: Apply your product image to the template You should save a Photoshop version (PSD) of your product image template so you don’t have to remake it each time. When you’ve created four guidelines, you should have a nice, even border like in the screenshot below. Note that you must type ‘px’ after the number value as Photoshop does not default to this measurement. You then need to type these values into the field. Simply work out what 10% and 90% (or whichever percentages you choose to go with) of your width and height are in pixels. If your product is rectangular, you’ll need to do a bit of maths. You should start by testing the image on your eCommerce store as it will look completely different when viewed on your site. If you want less white space, use 5% and 95%. If you want more white space, use 15% and 85%. If your product image is a square, create guidelines by repeating Step 2, but this time use the values 10% and 90% and create both horizontal and vertical guidelines for these specifications. To make them look consistent, you want to align them so they meet the same guidelines either horizontally or vertically. Unless you only sell the same product in multiple styles or colours, your product images are likely to all be a different shape. A thin aqua line will appear on the canvas - these guides are only visible in Photoshop, so don’t worry, they won’t be visible on your eCommerce store.Ĭreate a horizontal centre guide by selecting the ‘Horizontal’ radio button and typing ‘50%’ into the field. Go to View > New Guide at the top of your Photoshop window.Ĭreate a vertical centre guide by selecting the ‘Vertical’ radio button and typing ‘50%’ into the field. This will help you centre your product later. ![]() These guidelines will create a ‘cross’ in the middle of your canvas to identify the centre point and create a four-square grid. Press ‘OK’ and your new canvas will appear! Set the color mode to ‘RGB Color, 8 bit’ and the background contents to white. Ignore resolution! This is only needed if you’re printing images, and not if you’re uploading them to an eCommerce store. To summarise, the ideal size for a product image is anywhere between 1000px to 1600px on the longest side, and a square product image is always the safest because it will look great with products that are either vertically or horizontally longer. If you’re not sure what size you need, we’ve written a blog post to help you. Applying all your product images to this template will ensure they’re all the same size and that the product takes up the same amount of canvas space either vertically or horizontally.įollow these five steps to create and apply an eCommerce product image template in Adobe Photoshop: Step 1: Create a new file in PhotoshopĬreate a new file by going to File > New at the top of the Photoshop window.Ī dialogue box will appear that will let you set up your canvas. What’s the point of having awesome product images if they don’t look great on your eCommerce store?įor consistent product images, you need to create a template. ![]() Amd zen time spent11/3/2022 ![]() ![]() AMD hopes Zen will do for it what the impressive Core architecture has done for Intel. It is important to do so because this 'clean-sheet' design will be around in some form for a number of years. We'll focus on the architecture behind Ryzen first. ![]() Zen, or Ryzen, is therefore an understandably big deal. AMD is betting a large part of the house on Zen being able to stand toe-to-toe with Intel's present and upcoming CPU architectures in every space, so it simply has to succeed in order to give AMD the much-needed platform on which to bring enhanced iterations of Zen in years to come. Other, related processors will follow, such as Naples for the workstation and as-yet-unnamed offerings for laptops and fanless computers. Ryzen is the consumer brand name given to the first Zen-based microprocessor. This remained the status quo at the turn of this year. Once strong in both areas, if your memory is long enough, AMD, arguably through a lack of focus and therefore poor architectures, has seen its performance parity eroded and market share decimated. Intel, through its excellent Core microarchitecture, has had almost unfettered access to the premium desktop and lucrative workstation and server spaces for more than half a decade. Such an opening statement is not hyperbole. This renaissance is down to a processor that you have heard much about during febrile rumours and activity in the preceding weeks. It marks the re-emergence of AMD as a manufacturer of high-performance CPUs. #AMD ZEN TIME SPENT PC#March 2, 2017, is an important day for the PC industry. ![]() AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |