TGINSIGHT SIMILAR POSTS
Изворен канал @pythonotes · Post #269 · 7 јул.
Возможно, стоит пояснить разницу между синхронизацией из thread/process-safe и синхронизацией с помощью Lock🤔 Наша задача — заставить разные процессы и потоки обращаться к базе данных (или любым другим ресурсам) последовательно. Чтобы не случилось так называемого race condition, то есть состояние гонки. Это когда разные потоки или процессы пытаются одновременно что-то сделать с одним и тем же ресурсом. В этом случае нам нужна какая-то логика ограничения. Пока один процесс не завершил своё действие, другие не могут получить доступ к ресурсу. Так вот, thread-safe и process-safe означает что отдельно взятые операции записи в БД гарантированно будут последовательны. Запросы из разных процессов или потоков выстроятся в очередь и не будут мешать друг другу. Лучше всего когда этот блок реализован на уровне БД в виде атомарных операций или ещё как-то. Но зачем нам тогда еще дополнительный Lock? Этот способ синхронизации используется когда процесс никак не укладывается в одно действие и должен сделать множество операций прежде чем дать доступ следующему. В этом случае процесс ставит некий глобальный Lock на ресурс и никто другой, даже получив законное право на доступ, не может ничего сделать. Все ждут пока этот Lock не будет снят. Это решается на уровне приложения и правильность реализации полностью в вашей ответственности. Например, если забыли разблокировать или сделали перекрёстный Lock (Deadlock как на картинке), то всё зависнет в бесконечном ожидании. #basic
Hashtags
Пребарај: #lassafever
@ncdcgov · Post #4426 · 18.01.2025 г., 12:51
Our #LassaFever situation report for week 1, 2025 has been published. 54 cases have been confirmed and 10 deaths have been recorded across 6 states in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/ncdc.gov.ng/themes/common/files/sitreps/1bded1685f8dc4961a169a274be138c2.pdf
Hashtags
@ncdcgov · Post #4419 · 31.10.2024 г., 11:00
Our #LassaFever situation reports for weeks 42, 2024 have been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Hashtags
@ncdcgov · Post #4409 · 15.10.2024 г., 08:23
Our #LassaFever situation report for week 40, 2024 has been published. 1025 cases have been confirmed and 174 deaths have been recorded across 28 states in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Hashtags
@ncdcgov · Post #4375 · 06.09.2024 г., 09:11
Our latest #LassaFever situation report shows that 982 confirmed cases and 168 deaths have been recorded in 2024. This loss of lives is not just a number but a significant loss of a family member, friend, colleague or a seasoned healthcare worker CEPI vaccines writes on the critical need for a #LassaFever vaccine to control this disease. 🔗 https://cepi.net/lassa-vaccine-urgently-needed-save-thousands-lives Situation report: https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Hashtags
@ncdcgov · Post #4371 · 04.09.2024 г., 08:49
We have published our latest #LassaFever epidemiology data. Here you can find a summary of all the latest figures in our weekly infographic.🔽 The full report can be accessed via 🔗https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Hashtags
@ncdcgov · Post #4362 · 23.08.2024 г., 10:27
Our #LassaFever situation report for week 32, 2024 has been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Hashtags
@ncdcgov · Post #4346 · 08.08.2024 г., 09:19
Our #LassaFever situation report for week 30, 2024 has been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Hashtags
@ncdcgov · Post #4342 · 02.08.2024 г., 10:06
Our #LassaFever situation reports for weeks 28 and 29, 2024 have been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Hashtags
@ncdcgov · Post #4323 · 03.07.2024 г., 12:19
Our #LassaFever situation report for week 25, 2024 has been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Hashtags
@ncdcgov · Post #4316 · 25.06.2024 г., 09:27
Our #LassaFever situation report for week 24, 2024 has been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Hashtags
@ncdcgov · Post #4314 · 21.06.2024 г., 13:37
Our #LassaFever situation report for week 23, 2024 has been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Hashtags
@ncdcgov · Post #4294 · 04.06.2024 г., 13:55
Our #LassaFever situation report for week 21, 2024 has been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Hashtags