1 00:00:07,939 --> 00:00:10,610 Hey everyone, welcome back to the course. 2 00:00:10,610 --> 00:00:16,010 So now we have gone through the enterprise blockchain architecture and being an enterprise blockchain 3 00:00:16,010 --> 00:00:23,360 architect, you have also seen the different considerations and strategies which you can employ for 4 00:00:23,360 --> 00:00:24,970 your blockchain solutions. 5 00:00:24,980 --> 00:00:30,920 We have also gone through the security concerns and risk management, and these will help you to formulate 6 00:00:30,920 --> 00:00:35,810 the different factors which will help you to devise a much more effective solution. 7 00:00:35,930 --> 00:00:42,140 Although we have gone through the different kinds of interaction and integration capabilities and have 8 00:00:42,140 --> 00:00:48,740 given you the design feature sets for multiple problem statements, still, you don't need to devise 9 00:00:48,740 --> 00:00:50,540 everything from scratch. 10 00:00:50,750 --> 00:00:58,280 There are design patterns available which acts as a solution for some of the common problems which exist 11 00:00:58,280 --> 00:01:00,140 with blockchain employment. 12 00:01:00,170 --> 00:01:06,650 These design patterns will help you to create a blueprint for your solution, and on top of those solutions, 13 00:01:06,650 --> 00:01:10,020 you can create your whole enterprise blockchain project. 14 00:01:10,480 --> 00:01:16,540 In this lecture, we are going to discuss some of the major categories for the design patterns and in 15 00:01:16,540 --> 00:01:22,600 future lectures we will take each design pattern category at one point and then we will discuss what 16 00:01:22,600 --> 00:01:27,220 different blueprints are available for you to utilize for your solutions. 17 00:01:28,830 --> 00:01:32,340 The first category of patrons are the external world patrons. 18 00:01:32,340 --> 00:01:38,920 External world patrons are related to anything which you need to communicate with the external services. 19 00:01:38,940 --> 00:01:45,690 It could be your legal services or Oracle services or smart contracts which are existing out of your 20 00:01:45,690 --> 00:01:46,950 blockchain scope. 21 00:01:46,950 --> 00:01:52,730 So anything related to the external world connectivity will be maintained through the external world 22 00:01:52,740 --> 00:01:53,480 patrons. 23 00:01:53,490 --> 00:01:58,500 Some of the factors which affect the external world patrons are privacy and performance. 24 00:01:58,500 --> 00:02:04,530 Privacy is one of the feature which is built within the blockchain, and if we are exposing blockchain 25 00:02:04,530 --> 00:02:10,259 components to external services, then we need to make sure that the privacy is maintained with our 26 00:02:10,259 --> 00:02:11,070 solution. 27 00:02:11,160 --> 00:02:17,010 There are three different patron types, part of external world patrons verifier, reverse verifier 28 00:02:17,010 --> 00:02:19,020 and legal and smart contract payer. 29 00:02:19,140 --> 00:02:24,570 We will discuss each patron in detail when we go and discuss about the external world patrons. 30 00:02:25,610 --> 00:02:30,740 The second type of category for blockchain application patterns are the data management patterns. 31 00:02:30,770 --> 00:02:36,110 Data management patterns are related to management of data on and off blockchain. 32 00:02:36,140 --> 00:02:40,610 These patterns will help you to distribute the data throughout the blockchain. 33 00:02:40,640 --> 00:02:45,630 The factors which affect these kind of patterns are confidentiality and data size. 34 00:02:45,650 --> 00:02:52,130 You might be looking into a huge data, then you can utilize data management patterns for your needs. 35 00:02:52,160 --> 00:02:57,950 Some of the pattern types for data management patterns are encrypting on chain data, tokenization, 36 00:02:57,980 --> 00:03:00,530 off chain data storage and state journal. 37 00:03:00,560 --> 00:03:05,540 We will see each pattern type when we go and discuss about data management patterns. 38 00:03:07,020 --> 00:03:12,040 The third type of category for blockchain application patterns are the security patterns. 39 00:03:12,060 --> 00:03:17,220 Security patterns are one of the key aspects for the production based applications. 40 00:03:17,250 --> 00:03:23,220 These patterns define that how some of the common problems related to security considerations for a 41 00:03:23,220 --> 00:03:27,690 blockchain solution can be solved using the security patterns. 42 00:03:27,720 --> 00:03:33,750 The factors affecting these kind of patterns are authorization and identity management and the pattern 43 00:03:33,750 --> 00:03:39,360 types which we are going to discuss in the later part of the course are multiple authorization off chain, 44 00:03:39,360 --> 00:03:42,930 secret enabled dynamic authorization and confirmation. 45 00:03:42,930 --> 00:03:47,310 We will see each pattern in detail once we discuss about the security patterns. 46 00:03:48,820 --> 00:03:54,110 The fourth type of blockchain application pattern is contract structural pattern. 47 00:03:54,130 --> 00:04:00,340 Contract structural patterns are wholly related to smart contracts and how smart contracts run with 48 00:04:00,340 --> 00:04:01,360 your blockchain. 49 00:04:01,390 --> 00:04:07,420 They will design and define what could be the structure of smart contract and how smart contracts are 50 00:04:07,420 --> 00:04:12,760 going to integrate with the external services and with the internal functions of the blockchain. 51 00:04:12,790 --> 00:04:18,120 They will also define the different tokens and cost associated with the smart contract. 52 00:04:18,130 --> 00:04:24,670 Some of the factors defining these patterns are cost and performance, and the major types for this 53 00:04:24,670 --> 00:04:30,760 pattern are contract registry data, contract, embedded permissions, factory contract and incentive 54 00:04:30,760 --> 00:04:31,690 execution. 55 00:04:31,690 --> 00:04:36,940 We will see each pattern in detail once we go and discuss about the contract structural patterns. 56 00:04:38,570 --> 00:04:43,990 So that was just the overview of the different categories for the blockchain application patterns. 57 00:04:44,000 --> 00:04:50,240 These categories define some of the common problems which can be solved by the blueprints which we are 58 00:04:50,240 --> 00:04:53,000 going to provide in the later part of the course. 59 00:04:53,000 --> 00:04:59,180 You can use these blueprints in your design processes and create the whole enterprise blockchain architecture 60 00:04:59,180 --> 00:05:00,230 on top of these. 61 00:05:00,260 --> 00:05:04,820 Now let's go and discuss the first category for our design patterns. 62 00:05:04,820 --> 00:05:07,550 That is the external world patterns. 63 00:05:07,700 --> 00:05:13,010 If you have any queries, feel free to contact us at info at the rate weblogs.com.